The best mathematics is not just correct; it is illuminating.
最好的数学不仅正确,而且具有启发性。
真理是永恒不变的。
把人分为好坏很荒谬。人要么有魅力,要么就无趣。
There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. )
The only productive way to answer “what should I do now?” is to first tackle the question of “who should I become?”
Memory is a way of meeting.