学习理论中的一个关键见解是，假设类的复杂性对于泛化至关重要。

"The unexamined life is not worth living."

心理学的方法必须尽可能精确。

The only limit is the one you set yourself.

The essence of modernity is psychologism, the experiencing and interpretation of the world in terms of the reactions of our inner life and indeed as an inner world, the dissolution of fixed contents in the fluid element of the soul, from which all that is substantive is filtered and whose forms are merely forms of motion.