How can I possibly put a new idea into your heads, if I do not first remove your delusions?
— Doctor Pinero, Life Line, 1939
You have attributed conditions to villainy that simply result from stupidity.
— Logic of Empire (1941), Precursor to Hanlon's Razor
Man is not a rational animal, he is a rationalizing animal.
— Assignment in Eternity (1953)
Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.
Free will is a golden thread running through the frozen matrix of fixed events.
— The Rolling Stones (1952)
Aside from a cold appreciation of my own genius I felt that I was a modest man.
— Double Star (1956)
Love is the condition in which the happiness of another person is essential to your own.
— Stranger in a Strange Land (1961)
How anybody expects a man to stay in business with every two-bit wowser in the country claiming a veto over what we can say and can't say and what we can show and what we can't show it's enough to make you throw up. The whole principle is wrong; it's like demanding that grown men live on skim milk because the baby can't eat steak.
— The Man Who Sold the Moon (1950)note