做数学就是探索一个思想的宇宙，唯一的限制是你的想象力。

中心地的规模和分布遵循一定的规律。

You don't have to have the ability that quantum mechanics requires.You just have to know a few simple things and really know them.

成功不在于终点，而在于旅程。

解释：神态傲慢，谁还愿意和你相处呢？最洁白的东西好像十分黑暗，最道德的人好像有所不足。

我不必完美，我只需要做我自己。

You are never too old to set another goal or to dream a new dream.

Overfishing will only turn the ocean into a desert, we must learn restraint.