The past is a shadow that follows us everywhere.

Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.

The purpose of mental activity is to guide action.

"To live is to suffer, to survive is to find some meaning in the suffering."

没有以自然为基础的法律是无用的。

有时人生最困难的事是知道该跨过哪座桥，烧掉哪座桥。