True success is living life on your own terms.

一个力学问题只有被简化为代数问题时才算解决。

当有人说它不是钱，而是事情的主旨，它就是钱。

我做事情不是为了得到反应或批评，我为自己感到快乐的事情而活。

The secret of success is learning how to use pain and pleasure instead of having pain and pleasure use you. If you do that, you’re in control of your life. If you don’t, life controls you.

The world is full of magic things, patiently waiting for our senses to grow sharper.

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