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The world goes up and the world goes down, And the sunshine follows the rain; And yesterday's sneer and yesterday's frown Can never come over again.

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Mar 17, 2026

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Quote Author: Gian-carlo Rota

Gian-carlo Rota

Gian-carlo Rota

In preface to P. Davis and R. Hersh The Mathematical Experience, Boston: Birkhäuser, 1981.

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