Abstract

According to a tradition reaching back at least as far as Aristotle, human beings are set apart from other terrestrial creatures by their rationality. Other animals, according to this tradition, are capable of sensation and appetite, but they are not capable of thought, the kind of activity characteristic of the rational part of the soul. Human beings, by contrast, are rational animals, and an understanding of our minds must begin from a recognition of this distinctiveness. For, the tradition holds, the presence of rationality does not just add one more power to the human mind, or increase the scope and efficacy of mental powers already present in nonrational creatures. Rather, rationality transforms all of our principal mental powers, making our minds different in kind from the minds of nonrational animals.