"After having treated of these false Zealots in Religion, I cannot forbear mentioning … the Zealots in Atheism. One would fancy that these Men, tho' they fall short, in every other Respect, of those who make a Profession of Religion, would at least outshine them in this Particular, and be exempt from that single Fault which seems to grow out of the impudent Fervours of Religion: But so it is, that Infidelity is propagated with as much Fierceness and Contention, Wrath and Indignation, as if the Safety of Mankind depended upon it."
January 1, 1970
https://en.wikiquote.org/wiki/Atheism