You forget what you want to remember, and you remember what you want to forget.
The advancement of mathematics is through generalization.
愚蠢的人和聪明的人之间的区别——无论他们是否受过良好教育——在于聪明的人能够处理微妙之处。
The world is full of signs and wonders, but we are blind to them.
If you don't believe in yourself, no one else will.