Abstract

In a recent article donald sievert argues: (a) that descartes expresses both doubt and certainty concerning his own existence, And (b) that this vacillation in descartes' thought occurs because descartes uses two different proofs of his own existence--One proof dubitable, The other not. In my article I argue that sievert's analysis must be rejected because: (1) it explains neither descartes' expressions of self-Doubt, Nor his expressions of self-Certainty, And (2) it is inconsistent