人类的历史就是人们低估自己的历史。

I'm rich enough to be able to afford to be honest.

The ultimate measure of a man is not where he stands in moments of comfort and convenience， but where he stands at times of challenge and controversy.

The clouds over the land now rose like mountains, and the coast was only a long green line with the gray blue hills behind it. The water was a dark blue now, so dark that it was almost purple.

学习数学的最好方法就是去做数学。