The best time to plant a tree was 20 years ago. The second best time is now.
最个人的东西就是最具创造性的。
数学的乐趣在于努力理解的过程。
The quantum theory of computation is the most profound discovery in the history of science.
You don't get over a loss like that; you learn to live with it.
真正快乐的唯一途径是接受自己,并不断成长和进步。