你停止尝试的那一刻,就是你开始死亡的那一刻。
Have an aim in life,or your energies will all be wasted.
The best books are those that open your eyes.
Theorems are not discovered by accident.
Science has not yet taught us if madness is or is not the sublimity of the intelligence.
The world is very, very beautiful if you look at it, but most people don't look very much.