“Everyone must believe in something. I believe I'll have another beer”
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Groucho Marx 117
American comedian 1890–1977Related quotes

Source: The Roving Mind (1983), p. 43
Context: Don't you believe in flying saucers, they ask me? Don't you believe in telepathy? — in ancient astronauts? — in the Bermuda triangle? — in life after death?
No, I reply. No, no, no, no, and again no.
One person recently, goaded into desperation by the litany of unrelieved negation, burst out "Don't you believe in anything?"
"Yes", I said. "I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be."

Source: SPIDER-MAN Exclusive Interview With Yuri Lowenthal On Playing Peter Parker, Cameo, PRINCE OF PERSIA, & More https://www.comicbookmovie.com/spider-man/spider-man_ps4/spider-man-exclusive-interview-with-yuri-lowenthal-on-playing-peter-parker-cameo-prince-of-persia-more-a182153#gs.uob0p8 (February 2, 2021)
“When you believe in something, stand up for it, even if everyone is sitting.”
Source: Perfect

“Certainly everyone, in order to protect love,
Certainly wishes to believe in something”
Forgiveness
Lyrics, Memorial Address

As quoted in "Whedon creates space cowboys in 'Firefly'" in Post-Gazette (22 July 2002) http://www.post-gazette.com/tv/20020722owen0722fnp3.asp

“The interest I have in believing in something is not a proof that the something exists.”
Source: Faith vs. Fact (2015), p. 29 (quoting Voltaire)

“I really believe, or want to believe, really I am nuts, otherwise I'll never be sane.”