一本好书是通往另一个世界的门。

The individual is the only reality. The further we move away from the individual toward abstract ideas about Homo sapiens, the more likely we are to fall into error.

The method of psychology must be as exact as the methods of the natural sciences.

科学思想不像被分成越来越小的蛋糕，而像一棵不断分枝的树。