| The Columbia World of Quotations. 1996. |
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| NUMBER: | 18583 |
| QUOTATION: | In so far as the statements of geometry speak about reality, they are not certain, and in so far as they are certain, they do not speak about reality. |
| ATTRIBUTION: | Albert Einstein (1879–1955), U.S. physicist, mathematician, philosopher of science, pacifist. Geometry and Experience, p. 3 (1941).
On the distinction between abstract and physical geometry. |
| BIOGRAPHY: | Columbia Encyclopedia. |
| WORKS: | Einstein Collection. |
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| | | The Columbia World of Quotations. Copyright © 1996 Columbia University Press. |
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