"A mathematician is a blind man in a dark room looking for a black cat

which isn't there" - Charles R. Darwin (1809-1882) [English biologist]

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Copernicus, Nicholaus  (1473-1543)

Mathematics is written for mathematicians.

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#NoSpam.Q: Math is like love -- a simple idea but it can get complicated

Life is good for only two things, discovering mathematics and teaching 

mathematics.

        --Siméon Poisson

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If I feel unhappy, I do mathematics to become happy. If I am happy, I do mathematics to keep happy.

P. Turan, "The Work of Alfred Renyi", Matematikai Lapok 21, 1970, pp 199-210