René Descartes. (2023, March 24). Wikiquote. Retrieved March 22, 2024 from https://en.wikiquote.org/w/index.php?title=Ren%C3%A9_Descartes&oldid=3271966.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/people/r/rene-descartes/quotes/in-order-to-seek-truth-it-is-necessary-once-in-the-course-of-our-life-to-doubt-as-far-as-possible-of-all-things.md
