
Interview in Film Culture, no. 42 (1966), p. 101 https://books.google.it/books?hl=it&id=Jq2RAAAAIAAJ&dq=%22If+you+know%22.
Source: Les grands cimetieres sous la lune (A Diary of My Times) 1938, p.196-207
Interview in Film Culture, no. 42 (1966), p. 101 https://books.google.it/books?hl=it&id=Jq2RAAAAIAAJ&dq=%22If+you+know%22.
'Well, I do believe some things, of course,' conceded Father Brown; 'and therefore, of course, I don't believe other things.' .
The Dagger with Wings (1926)
The Dagger with Wings (1926)
Quoted in "Infamy and honor at the Atomic Café : Edward Teller has no regrets about his contentious career" by Gary Stix in Scientific American (October 1999), p. 42-43
Trump responding to a question about whether he had a relationship with Vladimir Putin during an interview with MSNBC's Thomas Roberts while visiting Moscow for the Miss Universe competition http://www.msnbc.com/thomas-roberts/watch/trump-discusses-putin-in-2013-734124099973 (November 2013)
2010s, 2013
Letter from Albania to Laura Ingalls Wilder, (October 27, 1926).
I might think about it a little bit, and if I can't figure it out then I go on to something else. But I don't have to know an answer. I don't feel frightened by not knowing things, by being lost in the mysterious universe without having any purpose — which is the way it really is, as far as I can tell. Possibly. It doesn't frighten me.
Source: No Ordinary Genius (1994), p. 239, from interview in "The Pleasure of Finding Things Out" (1981): video http://www.youtube.com/watch?v=NEwUwWh5Xs4&t=48m10s