“If I can't picture it, I can't understand it.”

— Albert Einstein

Attributed to Einstein by physicist John Archibald Wheeler in John Horgan's article "Profile: Physicist John A. Wheeler, Questioning the 'It from Bit'". Scientific American, pp. 36-37, June 1991. Reprinted here http://www.scientificamerican.com/article.cfm?id=pioneering-physicist-john-wheeler-dies after Wheeler's death.
Attributed in posthumous publications

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Albert Einstein 702

German-born physicist and founder of the theory of relativi… 1879–1955

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