Reasons for Thinking Some Ideas are Adventitious

Descartes considers two reasons for thinking that some ideas that seem to have come from outside (through sensation) resemble external objects.

  1. "It seems ... that I am taught this by nature." (IP3 51a)
  2. "I experience in myself that these ideas do not depend on my will ..." (IP3 51a)
Descartes goes on (IP3 51b) to reject both of these reasons.


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Richard Lee, rlee@uark.edu, last modified: 31 October 2004