Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
We don't inherit the oceans from our ancestors; we borrow them from our children.
"Humor is the great thing, the saving thing. The minute it crops up, all our irritations and resentments slip away and a sunny spirit takes their place."
The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.