"Though you, and most other Fellows of the Royal Society, are true Christians, and believers in Free Will, the very doctrines and methods that the Royal Society has promulgated have caused many to question the existence of God. ... As so much of civilization is rooted in those beliefs, this strikes me as one way in which our System of the World might be set up wrongly and thus self-doomed."
January 1, 1970
https://en.wikiquote.org/wiki/Existence_of_God