Quotation by David Hilbert

With this new way of providing a foundation for mathematics, which we may appropriately call a proof theory, I pursue a significant goal, for I should like to eliminate once and for all the questions regarding the foundations of mathematics, in the form in which they are now posed, by turning every mathematical proposition into a formula that can be concretely exhibited and strictly derived, thus recasting mathematical definitions and inferences in such a way that they are unshakable and yet provide an adequate picture of the whole of science. I believe I can attain this goal completely with my proof theory.
David Hilbert (1862–1943), German mathematician, philosopher of science and mathematics. repr. In J. van Heijenoort, From Frege to Goedel, pp. 464-479 (1927). "The Foundations of Mathematics."

A statement of its author's formalist program.
Surprise me with a
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