Cartesianism is of the philosophy of Descartes (I just discovered). Descartes was a fascinating individual. Something I recently read (but couldn't easily corr

Cartesianism is of the philosophy of Descartes (I just discovered). Descartes was a fascinating individual. Something I recently read (but couldn't easily corroborate through the web) was that when he was a young man he had three dreams in one night. He interpreted the content of the dreams as a divine signal that he should pursue wisdom. La Vie de M. Descartes - Adrein Baillet quoted in 'What Galileo Saw' by Lawrence Lipking