Good looks are a snare that every sensible man would like to be caught in.
The greatest killer of happiness is comparison. If you must compare, compare yourself to you yesterday
要成为一个好的数学家,你需要既有直觉又有严谨。
The world is full of obvious things which nobody by any chance ever observes.
In the end, we will remember not the words of our enemies, but the silence of our friends.