心理学概念必须在行动中证明其价值。

"The truth is rarely pure and never simple."

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

我认为这是写作中最重要的单一事情：它使熟悉的事物变得陌生，使陌生的事物变得熟悉。