成功不是终点，失败也非致命，重要的是继续前进的勇气。
Focus on what you're good at.
The only way to get the best of an argument is to avoid it.
Concerning the gods, I cannot know either that they exist or that they do not exist, nor what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.
The most elegant mathematical proofs are those that reveal truth with simplicity.