He who refuses to do arithmetic is doomed to talk nonsense.

In the wild, you learn to appreciate the little things. They often make the biggest difference.

The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.

感觉就是秘密。

You can’t go back and change the beginning, but you can start where you are and change the ending.

像明天就要死去一样活着，像永远活着一样学习。