You cannot always control what goes on outside, but you can always control what goes on inside.

Challenges are opportunities in disguise; embrace them with courage.

The light of reason is different from the light of nature.

人性的弱点总是充满贪婪、恐惧或者是愚蠢，这是完全可以预测的，但是我们无法预测这种人性弱点的发生顺序。