Books make great gifts because they have whole worlds inside of them.

"Writing is a form of therapy; sometimes I wonder how all those who do not write, compose, or paint can manage to escape the madness, melancholia, the panic and fear which is inherent in a human situation."

Psychology should focus on how the mind helps us adapt to our environment.

人类行为的首要原则是，一个人会做他认为能满足自己欲望的事情。