Abstract

In the Ethics, Spinoza is not expressly concerned with skepticism and the possibility envisaged by Descartes that clear and distinct ideas or conceptions may not be true. There is reason for this, as he was of the opinion that, if as in the Ethics we proceed in our thinking in the right order, doubt will not arise. In his earlier works, however, he is concerned with skepticism and, in particular, with the questioning of clear and distinct ideas. In the Prolegomenon in Part One of Descartes’ Principles, he sets forth what he takes to be Descartes’ attempt to allay doubts about clear and distinct perceptions. He finds there that Descartes does not succeed in answering an objection to his procedure, and he proposes an alternative way of escape from doubt. This alternative is also stated in the Improvement of the Understanding in the section on doubt or idea dubia ; and considerable light is cast upon it by his discussion in this section of the nature of doubt. Distinguishing genuine doubt and merely verbal doubt, i.e. professions of doubt when “the soul does not doubt,” he explains what leads to genuine doubt and how such doubt is to be removed. In my paper, I shall explicate the view stated in these passages and raise questions about the relations of this view to other views of Spinoza’s. I shall also be concerned with a short and cryptic passage earlier in the Improvement of the Understanding in which he deals with professions of doubt that, farther on, he deems merely verbal. In a final section, I shall assemble the views about skeptical doubt stated in the various places and give a summary statement of Spinoza’s attitude toward philosophical skepticism.