——杜先生晚年在香港,先生为中国抗战.赈灾慈善做出巨大贡献,晚年依旧气度过人,毁掉所有欠条。
The study of algorithms is not just about solving problems, but about understanding the limits of what is computationally possible.
Good means not merely not to do wrong, but rather not to desire to do wrong.