4. "After years of finding mathematics easy, I finally reached integral calculus and came up against a barrier. I realized that this was as far as I could go, and to this day I have never successfully gone beyond it in any but the most superficial way.” -- Isaac Asimov
19. "We have to reinvent the wheel every once in a while, not because we need a lot of wheels; but because we need a lot of inventors." -- Bruce Joyce
21. "All the effects of nature are only mathematical results of a small number of immutable laws." -- La Place
22.
23. "It is impossible to be a mathematician without being a poet in soul." -- Sophia Kovalevskaya
24.
25. "It is easier to square a circle than to get round a mathematician." -- de Morgan
26. "There is no branch of mathematics, however abstract, which may not someday be applied to the phenomena of the real world." -- Nicolai Lobachevsky
30. "Algebra is the intellectual instrument which has been created for rendering clear the quantitative aspects of the world." -- Alfred North Whitehead
31.
32. "The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful." -- Henri Poincare
39. "The pursuit of mathematics is a divine madness of the human spirit." -- Alfred North Whitehead
40. "There are no solved problems; there are only problems that are more or less solved." -- Henri Poincare
41. "I'm sorry to say that the subject I most disliked was mathematics. I have thought about it. I think the reason was that mathematics leaves no room for argument. If you made a mistake, that was all there was to it." -- Malcolm X
42. "He who can properly define and divide is to be considered a god.” -- Plato
43. "The science of Pure Mathematics, in its modern developments, may claim to be the most original creation of the human spirit." -- Alfred North Whitehead
50. "The union of the mathematician with the poet, fervor with measure, passion with correctness, this surely is the ideal." -- William James
51. "I was x years old in the year x^2.” -- Augustus De Morgan (when asked about his age)