I must study politics and war that my sons may have liberty to study mathematics and philosophy. -- John Adams

If it's incomprehensible, it's mathematics. -- Bennett Cern

I protest against the use of infinite magnitude ..., which is never permissible in mathematics. -- Carl Friedrich Gauss

And for mathematical science, he that doubts their certainty hath need of a dose of hellebore. -- Joseph Glanvill

an excessive study of mathematics absolutely incapacitates the mind... -- Sir William Hamilton

Round numbers are always false. -- Samuel Johnson

If I had inherited a fortune I should probably not have cast my lot with mathematics. -- Joseph-Louis Lagrange

If only gravity were working, the path would be symmetrical, it is the wind resistance that produces the tragic curve. --Norman Mailer

In my free time I do differential and integral calculus. -- Karl Marx

How is error possible in mathematics? -- Henri Poincare

But if two and two and fifty make a million,... --Pete Seeger

Do I contradict myself? Very well then I contradict myself. -- Walt Whitman