"Life is good for only two things, discovering mathematics and teaching mathematics." -- Siméon Poisson

"Do not worry about your difficulties in mathematics; I assure you that mine are greater." -- Albert Einstein

"Mathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency." -- Descartes

"The essence of mathematics is not to make simple things complicated, but to make complicated things simple." -- S. Gudder

"No human investigation can be called real science if it cannot be demonstrated mathematically." -- Leonardo da Vinci

"In mathematics, you don't understand things.  You just get used to them." -- Johann von Neumann

"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

"The life of a mathematician is dominated by an insatiable curiosity, a desire borderin on passion to solve the problems he is studying." -- Jean Dieudonne

"It is the duty of all teachers, and of teachers of mathematics in particular, to expose their students to problems much more than to facts." --Paul Halmos