Abstract: Biology continues to use the Tree of Life image to show the temporal continuity and discontinuity of the living beings. Moreover, the development of genetic, molecular biology and paleontology has originated phylogenetics. This discipline studies evolutionary relatedness among various groups of organisms through molecular sequencing data and morphological data matrices. The Tree offers interesting points for semiotic perspectives and for theological approaches too. The symbolic reading of the Tree of Life, on the one hand, (...) and the analogies with the Biblical genealogies and some Christian images, on the other hand, will be explored. -/- . (shrink)

As a way forward in assessing how the Old Testament wisdom tradition might speak to decisions in a modern medical context, in this paper, I propose exploring the iconographic function of the “tree of life” in the Old Testament, which is consistently associated with both wisdom as well as life and health, in order to tease out two-related issues that can help in providing a Christian theological framework for thinking about the problem of the medicalization of risk: (...) first, how should the natural and good human desire for health and long life be framed in terms of the pursuit of wisdom? And, second, how might a sapientially formed character approach risk and uncertainty in making medical decisions? The answers to these questions help establish a framework in which more specific questions related to the medicalization of risk can be assessed. As such, this paper is deliberately programmatic and perspectival rather than prescriptive. (shrink)

The ‘Tree of Life’ is intended to represent the pattern of evolutionary processes that result in bifurcating species lineages. Often justified in reference to Darwin’s discussions of trees, the Tree of Life has run up against numerous challenges especially in regard to prokaryote evolution. This special issue examines scientific, historical and philosophical aspects of debates about the Tree of Life, with the aim of turning these criticisms towards a reconstruction of prokaryote phylogeny and even (...) some aspects of the standard evolutionary understanding of eukaryotes. These discussions have arisen out of a multidisciplinary collaboration of people with an interest in the Tree of Life, and we suggest that this sort of focused engagement enables a practical understanding of the relationships between biology, philosophy and history. (shrink)

argue that natural selection does not explain the genotypic arid phenotypic properties of individuals. On this view, natural selection explains the adaptedness of individuals, not by explaining why the individuals that exist have the adaptations they do, but rather by explaining why the individuals that exist are the ones with those adaptations. This paper argues that this ‘Negative’ view of natural selection ignores the fact that natural selection is a cumulative selection process. So understood, it explains how the genetic sequences (...) that individuals inherit and that are responsible for their complex (and co-adapted) adaptations first arose in the gene-pool. (shrink)

The canonical view of a 3‐domain (3D) tree of life was recently challenged by the discovery of Asgardarchaeota encoding eukaryote signature proteins (ESPs), which were treated as missing links of a 2‐domain (2D) tree. Here we revisit the debate. We discuss methodological limitations of building trees with alignment‐dependent approaches, which often fail to satisfactorily address the problem of ‘‘gaps.’’ In addition, most phylogenies are reconstructed unrooted, neglecting the power of direct rooting methods. Alignment‐free methodologies lift most difficulties (...) but require employing realistic evolutionary models. We argue that the discoveries of Asgards and ESPs, by themselves, do not rule out the 3D tree, which is strongly supported by comparative and evolutionary genomic analyses and vast genomic and biochemical superkingdom distinctions. Given uncertainties of retrodiction and interpretation difficulties, we conclude that the 3D view has not been falsified but instead has been strengthened by genomic analyses. In turn, the objections to the 2D model have not been lifted. The debate remains open. Also see the video abstract here:https://youtu.be/-6TBN0bubI8. (shrink)

Biodiversity is a key concept in the biological sciences. While it has its origin in conservation biology, it has become useful across multiple biological disciplines as a means to describe biological variation. It remains, however, unclear what particular biological units the concept refers to. There are currently multiple accounts of which biological features constitute biodiversity and how these are to be measured. In this paper, I draw from the species concept debate to argue for a set of desiderata for the (...) concept of “biodiversity” that is both principled and coheres with the concept’s use. Given these desiderata, this concept should be understood as referring to difference quantified in terms of the phylogenetic structure of lineages, also known as the ‘tree of life’. (shrink)

In a recent paper,(1) palaeontologist Mike Benton claimed that our ability to reconstruct accurately the tree of Life may not have improved significantly over the last 100 years. This implies that the cladistic and molecular revolutions may have promulgated as much bad “black box” science as rigorous investigation. Benton's assessment was based on the extent to which cladograms (typically constructed with reference only to distributions of character states) convey the same narrative as the geochronological ages of fossil taxa (...) (an independent data set). Fossil record quality varies greatly between major clades, and the palaeontological dating “yardstick” may be more appropriate for some groups than others. BioEssays 24:203–207, 2002. © 2002 Wiley Periodicals, Inc.; DOI 10.1002/bies.10065. (shrink)

A recent study(1) of sequence data from many different proteins has suggested that contemporary prokaryotes and eukaryotes may have shared a common ancestor as recently as 2 billion years ago (the molecular clock). Strong evidence from the geological record, however, indicates that oxygen‐producing microorganisms, perhaps similar to modern cyanobacteria, existed 3.5 billion years ago. The fossil evidence, therefore, suggests that any common ancestor of prokaryotes and eukaryotes must have existed at least 1.5 billion years earlier than suggested by the molecular (...) clock evidence. The discrepancy between molecular and geological evidence for the age of modern cells is considered here, as are aspects of gene descent in the tree of life that might help to account for it. (shrink)

In this essay, I explore the relationship between the kabbalistic Tree of Life and that of Logic. I begin defining my terms, then analyze the question posed through that of science; philosophy; art and the concept of knowledge in general. I conclude that while a unified and complete account of knowledge cannot be gained, one can get a semblance of this knowledge. This I call a tending towards infinity or more precisely – a calculus of infinity. I conjecture (...) that this may lead to world-bettering, a wise kind of knowledge if you like that is neither of the Tree of Life nor that of the Tree of Knowledge as such, but the light itself which remains unnamable, that is to say beyond the realm of human knowledge. (shrink)

Ernst Mayr’s influence on philosophy of biology has given the field a particular perspective on evolution, phylogeny and life in general. Using debates about the tree of life as a guide, I show how Mayrian evolutionary biology excludes numerous forms of life and many important evolutionary processes. Hybridization and lateral gene transfer are two of these processes, and they occur frequently, with important outcomes in all domains of life. Eukaryotes appear to have a more (...) class='Hi'>tree-like history because successful lateral events tend to occur among more closely related species, or at a lower frequency, than in prokaryotes, but this is a difference of degree rather than kind. Although the tree of life is especially problematic as a representation of the evolutionary history of prokaryotes, it can function more generally as an illustration of the limitations of a standard evolutionary perspective. Moreover, for philosophers, questions about the tree of life can be applied to the Mayrian inheritance in philosophy of biology. These questions make clear that the dichotomy of life Mayr suggested is based on too narrow a perspective. An alternative to this dichotomy is a multidimensional continuum in which different strategies of genetic exchange bestow greater adaptiveness and evolvability on prokaryotes and eukaryotes. (shrink)

A common view is that species occupy a unique position on the Tree of Life. Evaluating this claim requires an understanding of what the Tree of Life represents. The Tree represents history, but there are at least three biological levels that are often said to have genealogies: species, organisms, and genes. Here I focus on defending the plausibility of a gene-based account of the Tree. This leads to an account of species that are determined (...) by gene genealogies. On this view, an exclusive group is a group of organisms that forms a clade for a higher proportion of the genome than any conflicting clade. Taxa occupy a unique position in what can be called the ‘primary concordance tree’. But each gene has its own historical ‘Tree of Life’. I conclude by arguing that both organismal pedigrees with their corresponding Tree as well as gene genealogies and their trees are objectively real and play important, but different, roles in biological practice. (shrink)

The article reviews about esoteric symbolism of the tree of life in shamanic cultures and oriental traditions including classical Hindu and Buddhist systems, together with various esoteric and indigenous traditions. The very idea of the tree of life, in indigenous cultures, which is often called the ‘world tree’ or ‘shamanic tree’, is connected with human illumination process in the form of mystical or ecstatic experience gained through the process of the self-realization. These various forms (...) of mystico-religious experiences could be found in many religious traditions, considered to be cross-cultural phenomena. The author made an attempt to make a classification of chakras and energetic structure of the human body according to cross-cultural analysis of various cultures. (shrink)

We examine three critical aspects of Popper’s formulation of the ‘ Logic of Scientific Discovery ’—evidence, content and degree of corroboration—and place these concepts in the context of the Tree of Life (ToL) problem with particular reference to molecular systematics. Content, in the sense discussed by Popper, refers to the breadth and scope of existence that a hypothesis purports to explain. Content, in conjunction with the amount of available and relevant evidence, determines the testability, or potential degree of (...) corroboration, of a statement; content distinguishes scientific hypotheses from metaphysical assertions. Degree of corroboration refers to the relative and tentative confidence assigned to one hypothesis over another, based upon the performance of each under critical tests. Here we suggest that systematists attempt to maximize content and evidence to increase the potential degree of corroboration in all phylogenetic endeavors. Discussion of this “total evidence” approach leads to several interesting conclusions about generating ToL hypotheses. (shrink)

Viewing education through the prism of the Torah, Tree of Life, Tree of Knowledge takes the reader through the stages of learning, growth, and self-development that characterize human lives. The journey begins with education as it happens in the home, moves on to the institutions of society, especially schools, and then on to the questions of identity and commitment which constitute the hidden agenda of “informal educational networks.” The self-education of the individual is explored: When does one (...) “grow up”? What is really worth knowing? How does one cope with memories, illness, and anticipations of what lies ahead? This book examines some of the millennial conversation in an attempt to discover an educational philosophy in the Torah that can be relevant to life in the contemporary world. (shrink)

Lateral gene transfer, the exchange of genetic information between lineages, not only makes construction of a universal Tree of Life difficult to achieve, but calls into question the utility and meaning of any result. Here I review the science of prokaryotic LGT, the philosophy of the TOL as it figured in Darwin’s formulation of the Theory of Evolution, and the politics of the current debate within the discipline over how threats to the TOL should be represented outside it. (...) We could encourage a more realistic and supportive public understanding of evolution by admitting that what we believe in is not a unified meta-theory but a versatile and well-stocked explanatory toolkit. (shrink)

Much is being written these days about integration, its desirability and even its necessity when complex research problems are to be addressed. Seldom, however, do we hear much about the failure of such efforts. Because integration is an ongoing activity rather than a final achievement, and because today’s literature about integration consists mostly of manifesto statements rather than precise descriptions, an examination of unsuccessful integration could be illuminating to understand better how it works. This paper will examine the case of (...) prokaryote phylogeny and its apparent failure to achieve integration within broader tree-of-life accounts of evolutionary history. Despite the fact that integrated databases exist of molecules pertinent to the phylogenetic reconstruction of all lineages of life, and even though the same methods can be used to construct phylogenies wherever the organisms fall on the tree of life, prokaryote phylogeny remains at best only partly integrated within tree-of-life efforts. I will examine why integration does not occur, compare it with integrative practices in animal and other eukaryote phylogeny, and reflect on whether there might be different expectations of what integration should achieve. Finally, I will draw some general conclusions about integration and its function as a ‘meta-heuristic’ in the normative commitments guiding scientific practice. (shrink)

Do trees of life have roots? What do these roots look like? In this contribution, I argue that research on the origins of life might offer glimpses on the topology of these very roots. More specifically, I argue (1) that the roots of the tree of life go well below the level of the commonly mentioned ‘ancestral organisms’ down into the level of much simpler, minimally living entities that might be referred to as ‘protoliving systems’, and (...) (2) that further below, a system of roots gradually dissolves into non-living matter along several functional dimensions. In between non-living and living matter, one finds physico-chemical systems that I propose to characterize by a ‘lifeness signature’. In turn, this ‘lifeness signature’ might also account for a diverse range of biochemical entities that are found to be ‘less-than-living’ yet ‘more-than-non-living’. (shrink)

Common ancestry is a central feature of the theory of evolution, yet it is not clear what “common ancestry” actually means; nor is it clear how it is related to other terms such as “the Tree of Life” and “the last universal common ancestor”. I argue these terms describe three distinct hypotheses ordered in a logical way: that there is a Tree of Life is a claim about the pattern of evolutionary history, that there is a (...) last universal common ancestor is an ontological claim about the existence of an entity of a specific kind, and that there is universal common ancestry is a claim about a causal pattern in the history of life. With these generalizations in mind, I argue that the existence of a Tree of Life entails a last universal common ancestor, which would entail universal common ancestry, but neither of the converse entailments hold. This allows us to make sense of the debates surrounding the Tree, as well as our lack of knowledge about the last universal common ancestor, while still maintaining the uncontroversial truth of universal common ancestry. (shrink)

A recent thought‐provoking theory argues that complex organisms using epigenetic information for their normal development and functioning must irreversibly age as a result of epigenetic signal loss. Importantly, the scope of this theory could be considerably expanded, with scientific benefits, by analyzing epigenetic ageing beyond the borders of the Tree of Life. Viruses that use epigenetic signals for their normal functioning may also age, that is, present an increasing risk of failing to complete their individual life cycle (...) and to disappear with time. As viruses are ancient, abundant, and infect a considerable diversity of hosts, the ageing virus hypothesis, if verified, would have important consequences for many fields of the Life sciences. Uncovering ageing viruses would integrate the most abundant and biologically central entities on Earth into theories of ageing, enhance virology, gerontology, evolutionary biology, molecular ecology, genomics, and possibly medicine through the development of new therapies manipulating viral ageing. (shrink)

The Great Chain of Being has been recognized for fifty years as the masterpiece of the History of Ideas movement in America. Lovejoy's work stimulated deeper research into our heritage, which has demonstrated that the idea of the chain of being has not lost its vitality. However, Lovejoy would probably be surprised that hierarchy is now defended in philosophy of science, in ontology and metaphysics, in ethics and aesthetics, and in philosophical anthropology. This volume presents concepts of hierarchy and the (...) great chain of being from Plato, Aristotle, Plotinus, medieval and Renaissance thinkers, Hindu philosophy, and authors of the twentieth century. This volume represents the ideas of twenty scholars, among whom are Dominic O'Meara, Ronald Hathaway, Ewert Cousins, John Sommerfeldt, Lewis Ford, David Blumenthal, and Marion and Paul Kuntz. The editors have compiled a bibliography of four hundred and fifty items and an index of names, places, and concepts which allow the reader immediate access to the variety as well as the unity of ideas. (shrink)

Venerable tradition allies the Torah with Wisdom, a “tree of life.”2 The tree of life is an ancient mythic symbol of the earth mother. This essay demonstrates the capacity of the Torah to facilitate a reintegrative return to the mother when, as now, the religious narratives falter that once seemed to ensure the unity of man made in the image of God conceived only as the Father. Participating in the process of this return one discovers beneath (...) the Torah's fractured narrative surface a reduplicative pattern based on the logic of the unconscious, which is founded on the repressed prelinguistic bond with all life formed at the maternal breast. This pattern reflects the recombinant properties that the unconscious shares with the earth, which breaks down and regenerates dead matter as the unconscious breaks down and regenerates the meaning of words. Folded into rhetorical tropes as into a single letter, the Torah's regenerative pattern repeatedly recalls to man what it means to be human, unique among but also one with all the diverse life of the earth. (shrink)

:Terrence Malick's film The Tree of Life revisits many of the questions regarding a Christian theodicy. How, for example, can one reconcile the idea of providence or believe in the meaning of human suffering when life itself is subject to and even dependent on chance and violence? In order to sustain faith in providence in such a universe, Malick suggests that one must be willing to absorb the insults of accident and sacrifice the human drive to control (...) and master one's own destiny. In his invocation of Job, his allusions to Dostoevsky's The Brothers Karamazov, and his debt to Kierkegaard, Malick suggests that the recompense for this sacrifice is an intensification of appreciation for existence itself and for the spiritual value of biological and geological processes. In this way, the film offers an insightful ecotheology that makes earth more central to a Christian ethos. (shrink)

The Tree of Nature represents an IT-based approach to understanding Nature in the light of present-day scientific knowledge. The universe, in this view, consists of discrete entities; these are not material particles, however, but information processing events that produce observable changes in the world. The surprising result of this analysis is that the workings of Nature are based on a decision tree consisting of two dozen parameters. The tree is similar to the evolutionary phylogenetic system of the (...) various forms of life, but it is far more fundamental; constituting, as it does, the very base of everything that exists. The overall conclusion is that the universe is steadily producing new information. Metaphorically speaking, it constitutes a self-unfolding story in which events do not pass away into non-existence but instead remain forever as an indelible part of the whole. This also holds true for integrated sets of events, such as the lifetime experiences of an individual. The Tree of Nature leads to the following testable prediction: A successful quantum-gravity theory will involve the notion of a strong complementarity between gravity and the strong nuclear force. (shrink)

Andrey Bely's autobiographical novel Kotik Letaev and Terrence Malick's film The Tree of Life do not share a common subtext. Nevertheless, they have strikingly similar themes. They each deal with an adult's confrontation of his past through memory, a memory that extends back before birth. Coming to terms with the past prepares the adult protagonist of each work for his destiny. The essay discusses Malick's use of William Blake's mysticism and Bely's dependence on the religious-philosophical ideas of Rudolf (...) Steiner. Memory plays an important role in both works as it touches on the recapitulation of cosmic origins in the development of the individual human being. What the quester discovers through memory enables him to find the way back to Eternity from which he has descended. Both artists invoke the World Tree uniting heaven and earth and its association with the Cross of Christ. In both the novel and the film the world is seen first through a child's eyes, then through growing understanding of the adult. Malick illustrates with cinematography what Bely describes in words. Malick uses music in a way that fleshes out what Bely attempted to create through using musical tropes in language. (shrink)

At this time when the development of synthetic biology and artificial intelligence are changing the world around us, philosophers and scientists, first of all, must converge to analyze the present and predict the ethical-social consequences and biological dangers associated with new “living entities” that are not the result of the natural evolutionary process. As synthetic/artificial life forms (xenobots, robots, transgenic organisms, etc.) become more and more abundant and sophisticated, it seems first of all necessary to bring some order to (...) all this new biodiversity, establishing what is alive and what is not, and analyzing the consequences of this incessant creative activity. Here I intend to organize all these human-made entities and clarify their status as living beings or artificial elements, leaving the door open to an uncertain future in which we will be able to see how “the artificial” and “the natural” could merge to originate something different from everything known. Accordingly, I propose the creation of a new domain, Lithbea, which includes all synthetic and artificial entities within a new kingdom called Humade (derived from human-made). I have also included viruses in a new realm, the Viral kingdom, because they were excluded from the classical three-domain tree of life despite playing a fundamental role in the evolution of biodiversity on Earth. Finally, I make a brief comment on the unpredictability of the unknown, the implications of this new landscape of biodiversity, and the uncertain future of all these advances. (shrink)

The course of biological evolution is regarded by many authors as an ascending path toward higher levels of variety, complexity and integration. There are similar but partly conflicting accounts of the nature and causes of this ascending course. With the aim of reaching a unified conception I start by summarily reviewing three notable examples. These are, in their latest presentations, those of Hoffmeyer and Stjernfelt 2015, Szathmáry 2015, and Lane 2015a. Comparison of their commonalities and divergences, combined with further reflections, (...) leads to the following views: 1) cooperation between preexistent traits and processes is the primary determinant in the emergence of evolutionary novelty; 2) cooperation is a triadic relation similar to semiosis ; 3) regulation, the key element of both metabolism and replication, results from the cooperation of energetic and semiotic causation; 4) conceptual generalization and concrete generalization are fruits of cooperation. Conceptual generalizations spring from the cooperation of ideas. I believe these realizations supply essential elements for a unified view of the ascent of biological evolution towards higher levels of organization. Some of these conceptions are also applicable to similar ascending trajectories through the stages of cultural and technological evolution. (shrink)

The computer is more then a mere machine. Starting with questions of Intelligence, Artificial Intelligence and Neural Network we proceeded to Artificial Life. This new science raises fear and doubts which are similar to other historical intolerances and fears, mainly concerned with the progression of science and technology that littered our history. Yet Artificial Life is different as it addresses directly the fate of our race. Some consider it as its salvation, while others see it as its annihilator. (...) The promises could be great but so are the risks. Following a historical route of promises and fears we would like to analyze the place of Artificial Life in our life. (shrink)

Future prize-winning writer Chava Rosenfarb was seventeen years old when she was incarcerated in the Łódź ghetto. In 1972, she published The Tree of Life [Der boym fun lebn] (1972), a fictional chronicle of that experience of the Holocaust. In this three-volume epic novel, Rosenfarb narrates and interlaces the fates of ten Jewish families from pre-war Poland in 1939 to the liquidation of the ghetto in 1944. The "Tree of Life" is revealed to be the name (...) given by the "ghettoniks" to an iconic cherry tree that stands in the shared backyard of a group of apartment complexes inhabited by many of the protagonists in the ghetto. Far from being an anecdotal presence, the cherry tree becomes the center of Rosenfarb's reflections on the impacts of the environment on one's physical and mental health. In this article, The Tree of Life is analyzed from an ecocritical perspective to examine the interconnections between genocidal intent and environmental precariousness. The first part considers the perpetration angle of the Łódź ghetto establishment as a Nazi tool of ecological violence through its excessive economic program of forced labour and its structural health determinants leading to epidemics. We will then investigate the characters' attempts to reconnect to nature through tangible acts of agency (the development of small gardens to grow one's own food) and symbolism (the cherry tree evoking the freedom of the outside world). The purpose of this article is to explore the links between genocide and ecocide within the framework of literary memory, while appreciating the relevance of Chava Rosenfarb's representations of the Holocaust to our era of renewed ecological awareness. (shrink)

Considering the properties of mirror neurons (MNs) in terms of development and phylogeny, we offer a novel, unifying, and testable account of their evolution according to the available data and try to unify apparently discordant research, including the plasticity of MNs during development, their adaptive value and their phylogenetic relationships and continuity. We hypothesize that the MN system reflects a set of interrelated traits, each with an independent natural history due to unique selective pressures, and propose that there are at (...) least three evolutionarily significant trends that gave raise to three subtypes: hand visuomotor, mouth visuomotor, and audio–vocal. Specifically, we put forward a mosaic evolution hypothesis, which posits that different types of MNs may have evolved at different rates within and among species. This evolutionary hypothesis represents an alternative to both adaptationist and associative models. Finally, the review offers a strong heuristic potential in predicting the circumstances under which specific variations and properties of MNs are expected. Such predictive value is critical to test new hypotheses about MN activity and its plastic changes, depending on the species, the neuroanatomical substrates, and the ecological niche. (shrink)

This paper discusses a krater recently discovered in a cultic building at Tel Burna in the Shephelah. Of special interest is the krater’s relatively well-preserved decoration containing multiple nature scenes related to the so-called tree of life or sacred tree motif. The krater’s physical description and archaeological context and the decoration’s relationship to relevant comparanda are explored in order to elucidate the significance of its iconography. In light of this discussion, we conclude that the decoration includes an (...) abstract representation of a Canaanite goddess as a “pubis of life” variation of the “tree of life” motif on the krater as a votive vessel in the Late Bronze Age cult. (shrink)

Responds to the seminal claim of Bruce Russell that films cannot present philosophical arguments. Provides a reading of The Tree of Life (Terrence Malick, 2011) in order to illustrate how this film presents an environmental ethics argument. Some reference to the environmental philosophy of Holmes Rolston III as well as Martin Heidegger.

Brackets and tables, circles and maps, 1554-1872 -- Early botanical networks and trees, 1766-1815 -- The first evolutionary tree, 1786-1820 -- Diverse and unusual trees of the early nineteenth century, 1817-1834 -- The rule of five, 1819-1854 -- Pre-Darwinian branching diagrams, 1828-1858 -- Evolution and the trees of Charles Darwin, 1837-1868 -- The trees of Ernst Haeckel, 1866-1905 -- Post-Darwinian nonconformists, 1868-1896 -- More late-nineteenth-century trees, 1874-1897 -- Trees of the early twentieth century, 1901-1930 -- The trees of Alfred (...) Sherwood Romer, 1933-1966 -- Additional trees of the mid-twentieth century, 1931-1943 -- The trees of William King Gregory, 1938-1951 -- Hints of new approaches, 1954-1969 -- Phenograms and cladograms, 1958-1966 -- Early molecular trees, 1962-1987 -- Notable trees of the past four decades, 1970-2010 -- Primeval branches and universal trees of life, 1997-2010. (shrink)

The "tree of life" iconography, representing the history of life, dates from at least the latter half of the 18th century, but evolution as the mechanism providing this bifurcating history of life did not appear until the early 19th century. There was also a shift from the straight line, scala naturae view of change in nature to a more bifurcating or tree-like view. Throughout the 19th century authors presented tree-like diagrams, some regarding the Deity (...) as the mechanism of change while others argued for evolution. Straight-line or anagenetic evolution and bifurcating or cladogenetic evolution are known in biology today, but are often misrepresented in popular culture, especially with anagenesis being confounded with scala naturae. Although well known in the mid 19th century, the geologist Edward Hitchcock has been forgotten as an early, if not the first author to publish a paleontologically based "tree of life" beginning in 1840 in the first edition of his popular general geology text Elementary Geology. At least 31 editions were published and those between 1840 and 1859 had this "paleontological chart" showing two trees, one for fossil and living plants and another for animals set within a context of geological time. Although the chart did not vary in later editions, the text explaining the chart did change to reflect newer ideas in paleontology and geology. Whereas Lamarck, Chambers, Bronn, Darwin, and Haeckel saw some form of transmutation as the mechanism that created their "trees of life," Hitchcock, like his contemporaries Agassiz and Miller, who also produced "trees of life," saw a deity as the agent of change. Through each edition of his book Hitchcock denounced the newer transmutationist hypotheses of Lamarck, then Chambers, and finally Darwin in an 1860 edition that no longer presented his tree-like "paleontological chart.". (shrink)

The artist understands his work as intimately connected with the life and symbolism of plants. Art, thus, demands an attunement to life’s elemental operations, the thrust “into dimensions far removed from the conscious process.” The first part of the present essay aims at recovering what is implied in the imagery of trees, delving into ancient archives of dormant collective memories and immemorial imaginal stratifications. The second and third parts, deploying the re-energized figure of the tree, explore the (...) theme of the relation between art and life, indeed, what Klee calls the “art of life.” By reference to Klee’s 1924 Jena lecture and the artist’s diaries, the discussion addresses the intersecting themes of artistic formation, mindful self-formation, the vital importance of worldly roots, and the transcendent fragrance of flowers and fruits. (shrink)

This study of the Jewish legal system (the Halakhah) demonstrates that the law embraces every corner of life.