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What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.
Stay focused, stay humble, and always keep learning.
The beauty of mathematics only shows itself to more patient followers.
种树的最佳时间是20年前;第二好的时间就是现在。
有时候,最深的痛苦来自于我们无法表达的情感。