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I believe that either Jupiter has life or it doesn't. But I neither believe that it does, nor do I believe that it doesn't.

— Raymond Smullyan An Epistemological Nightmare (1982)

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More quotes by Raymond Smullyan

There is nothing like a naturalistic orientation to dispel all these morbid thoughts of "sin" and "free will" and "moral responsibility."

Is God a Taoist? (1977)

Humor could not flourish in a wholly serious and rational atmosphere.

Planet Without Laughter (1980)

Medical opinions differed as to the cause of this "humor" disease.

Planet Without Laughter (1980)

I have free will, but not of my own choice. I have never freely chosen to have free will. I have to have free will, whether I like it or not!

Is God a Taoist? (1977)

Of course the falsity of the fact that you believe it is red implies that you don't believe it is red. But this does not mean that you believe it is not red!

An Epistemological Nightmare (1982)

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Attribution

Quote text and notes from Wikiquote: Raymond Smullyan (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.