Descartes lived in a time where religion/God was the center of life and the only form of structure you needed to adhere to. He stated in the first set of rules he abides by (that makes up his definition of “logic) –
” (1) The first was never to accept anything as true if I didn’t have evident knowledge of its truth: that is carefully to avoid jumping to conclusions and preserving old opinions, and to include in my judgments only what presented itself to my mind vividly and so clearly that I had no basis for calling it in question.”
Throughout Part 4 of his findings, he illustrates why God exists – but religion is not something you can prove (or disprove) and the evidence is not clearly there. I find it ironic that he rejects many things in life, but not the existence of God. Does he accepts the existence of God out of fear? Why doesn’t he reject the idea of God once he set out to find the full knowledge of life?