读书时刻苦用心，才能达到一字千金的层次。

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.

The greatest thing you'll ever learn is just to love and be loved in return.

We never take our success for granted.