心理学家必须不带预设地研究心灵。

——在遗嘱上签名后，对在病榻的同志们说，1925年3月11日

"Every story is a journey, and every journey changes the traveler."

If you can look into the seeds of time, And say which grain will grow and which will not, speak then to me, who neither beg nor fear Your favours nor your hate.

艺术是人类灵魂最纯粹的表达。

避免错误的最佳方式是积累经验。