数学不是一项观赏性运动；要理解它，必须积极参与其中。
Mathematics is not a spectator sport; to understand it, one must engage with it actively.
思想即是感恩。
音乐是我的生命，谢谢你们肯定我的生命。
痛苦的秘诀在于有闲暇去纠结自己是否幸福。
The more you do, the more you learn. The more you learn, the more you can do.
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
Purposive behavior in animals and men.
我不能让生命就此消逝无踪，重头再来。