“That maxim, it’s not an argument against atheism—it’s an argument against foxholes.”

Sólo la virtud tiene argumentos poderosos contra el pesimismo.
Source: Leopoldo Alas (1975) Solos de Clarín.; Also attributed without citation at Frases Célebres http://frasescelebresmajo.blogspot.com/2011/09/leopoldo-alas-clarin.html

Source: The Book of Nothing (2009), chapter one "Zero—The Whole Story"<!-- p. 40-->
Context: The Greek tradition was a complete contrast to that of the Far East.... the Greeks placed logic at the pinnacle of human thinking. Their sceptical attitude towards the wielding of 'non-being' as some sort of 'something' that could be subject to logical development was exemplified by Parmenides' influential arguments against the concept of empty space.... He maintained that you can only speak about what is: what is not cannot be thought of, and what cannot be thought of cannot be.... more unexpected was the further conclusion that time, motion nor change could exist either.

Attribution debunked in Langworth's Churchill by Himself. First known appearance is in a 1992 usenet post https://groups.google.com/forum/message/raw?msg=rec.arts.comics.misc/EMj3ZowKq1U/E0dsEBwdZEgJ.
Misattributed
Source: Google books link https://books.google.com/books?id=vbsU21fEhLAC&q=average+voter#v=snippet&q=average%20voter&f=false

The trial of Charles B. Reynolds for blasphemy (1887)

Section IX, "Man Alone with Himself" / aphorism 515
Human, All Too Human (1878), Helen Zimmern translation

Tweeted on June 20, 2020 https://twitter.com/michaelmalice/status/1274452143886553091, repeated subsequently.

Source: Complexity and Postmodernism (1998), p. 86

Source: A General Introduction to Psychoanalysis