Home is the place where, when you have to go there, they have to take you in.

Variant: All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion and desire.

The best way to learn is by doing—get your hands dirty in the lab.

在有地位的人面前不要诉说自己的卑贱，否则他会认为在要求他推荐。在富有的人面前不要说自己的贫困，否则他会认为在求他可怜。

我唯一上瘾的就是赢。