As one sharpens a knife on a whetstone, the brain can be sharpened on dull objects of thought. Every form of assiduous thinking has its value.

— Stanislaw Ulam Adventures of a Mathematician - Third Edition (1991)

More quotes by Stanislaw Ulam

Adventures of a Mathematician - Third Edition (1991)

Adventures of a Mathematician - Third Edition (1991)

Adventures of a Mathematician - Third Edition (1991)

Adventures of a Mathematician - Third Edition (1991)

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