“Anything that thinks logically can be fooled by something else that thinks at least as logically as it does.”

Source: Lateral Thinking : Creativity Step by Step (1970), p. 159.

Source: Lateral Thinking : Creativity Step by Step (1970), p. 159

Foreword to Teichmüller Theory

Un imbécil detectivesco es un imbécil listo, un imbécil lógico, los peores, porque la lógica de los hombres, en vez de compensar su imbecilidad, la duplica y la triplica y la hace ofensiva.
Source: Todas las Almas [All Souls] (1989), p. 30

1910s, Dada Manifesto', 1918

Source: Language, Truth, and Logic (1936), p. 77.
Context: The principles of logic and mathematics are true simply because we never allow them to be anything else. And the reason for this is that we cannot abandon them without contradicting ourselves, without sinning against the rules which govern the use of language, and so making our utterances self-stultifying. In other words, the truths of logic and mathematics are analytic propositions or tautologies.

In response to those who made purely formal or mathematical arguments, as quoted in What Little I Remember (1979) by Otto Robert Frisch, p. 95

As quoted in Bigeometric Calculus: A System with a Scale-Free Derivative (1983) by Michael Grossman, and in Single Variable Calculus (1994) by James Stewart.

Source: O Brother, Where Art Thou?