At the close of our studies， we knew all the past of physics， but nothing of the present and the future.

I hope that in this year to come, you make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.

常看修养品德胜过我的人，则惭愧耻辱油然而生；常看物质享受不如我的人，则埋怨情绪自然消失。