The books that everybody admires are those that nobody reads.

Each of us is the weaver of our own destiny, though sometimes we cannot choose the threads in our hands.

心理学的方法必须像自然科学一样精确。

幸福取决于内心，而非外界。

真理的最小原子也代表着某个人艰苦的劳动和痛苦。

我越是工作，就越是以不同的方式看待事物。