PHI 1103 Lecture Notes - Lecture 3: Cartesian Doubt, Dream Argument, Undressed
13 Apr 2016
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1. until now, everything i have accepted as most true and certain. I have learned either from the senses or through (?) the senses. 2. it is proved that sometimes the senses are deceptive. 3. it is prudent not to trust anything by which we have once been deceived. 4. thus, the senses should not be trusted at all. Although, the primary goal of the cartesian doubt is to ind certainty, it also has a secondary purpose; that is, to show that certainty is not provided by the senses. So, a sense-based knowledge is not only uncertain and doubtable, but it is also impossible. Although it is true that the senses sometimes deceive us, there are yet many other sense-based beliefs about which doubt is impossible. For example, there is the fact that i am here, seated by the ire, attired in a dressing gown, having this paper in my hands and other similar matters.
