In mathematics, the journey is often more important than the destination.

A man is a dangerous thing, a man who has nothing to lose is even more dangerous.

解释：称赞人不夸大他好的地方，那么听的人心里不痛快；诽谤人不增加他的过错，那么听的人心里不满足。

真正的成功来自于为他人增加价值，而不仅仅是为自己。

人生没有重来，所以要好好珍惜。

地理学的研究是对地球作为人类居住地的研究。