“Only the saints would joke so about the gods, because it was either joke or scream, and they alone knew it was all the same to the gods.”

Chick tracts, " Sin City http://www.chick.com/reading/tracts/5003/5003_01.asp" (2001)

Volume 3, Ch. 1
Fiction, The Book of the Long Sun (1993–1996)

Source: The Girl Next Door

A letter to his wife Polly (October 1938) http://bernie.cncfamily.com/sc/excalibur.htm, quoted in Bare-faced Messiah: The True Story of L. Ron Hubbard (1987), p. 81 http://www.discord.org/~lippard/bfm/bfm05.htm#81.
Context: Living is a pretty grim joke, but a joke just the same. The entire function of man is to survive. The outermost limit of endeavour is creative work. Anything less is too close to simple survival until death happens along. So I am engaged in striving to maintain equilibrium sufficient to at least realize survival in a way to astound the gods. I turned the thing up so it's up to me to survive in a big way... Foolishly perhaps, but determined none the less, I have high hopes of smashing my name into history so violently that it will take a legendary form even if all books are destroyed.

Sometimes attributed to Heisenberg, this was actually a statement made by Niels Bohr, as quoted in The Genius of Science: A Portrait Gallery (2000) by Abraham Pais, p. 24
Some things are so serious that one can only joke about them.
Variant without any citation as to author in Denial is not a river in Egypt (1998) by Sandi Bachom, p. 85
Misattributed

As quoted in The Genius of Science: A Portrait Gallery (2000) by Abraham Pais, p. 24
Some things are so serious that one can only joke about them.
Variant without any citation as to author in Denial is not a river in Egypt (1998) by Sandi Bachom, p. 85.

Responding to a compliment on his suit from European Commission president Jose Manuel Barroso (November 2005) http://news.bbc.co.uk/2/hi/europe/4421818.stm
2000s, 2005