Crossword clues for the word: DESCARTES The word DESCARTES has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for DESCARTES Showing 1 to 5 of 5 results Clue(s) "'I think, therefore I am' thinker" Cartesians are his followers Cogito ergo sum<P> man Great mathematician. He fathered analytical geometry