Psychological concepts must prove their worth in action.

"What is a poet? An unhappy person who conceals profound anguish in his heart but whose lips are so formed that as sighs and cries pass over them they sound like beautiful music."

"The past is not dead. It is not even past."

世界是生者的地方，死者在其中没有位置。死者什么都不是。他们甚至不是记忆。他们被遗忘了。而生者，也将被遗忘。

心理学的方法必须严格控制。