To understand is to know what causes what.

实现明天理想的唯一障碍是今天的疑虑。

The self is not so much a substance as a process, and it is the continual task of education to change the process, to develop its activities, and to guide it into channels of efficiency.

The best revenge is massive success.

心灵是生物的问题解决装置。

A real decision is measured by the fact that you’ve taken a new action. If there’s no action, you haven’t truly decided.