Psychology must be a science of description, not explanation.

Welcome, O life! I go to encounter for the millionth time the reality of experience and to forge in the smithy of my soul the uncreated conscience of my race.

I'm not a person who looks back. I'm always looking forward.

释义：别人称赞我，不值得高兴；别人批评我，也不值得生气。

简短的词是最好的,又短又古老的词最最好。

坚持和决心是无所不能的。