Everything is a learning process: any time you fall over, it's just teaching you to stand up the next time.

我曾经整天不吃饭，整夜不睡觉，去苦苦思索，结果没有益处，还不如去学习。

"What good's an opinion if you don't know?"

幸福来自内心，而不是物质的东西。