Internal mental events are irrelevant to the scientific study of behavior.

Quality fruit starts with quality soil - we must care for the foundation of all growth.

A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else. Men’s happiness or misery is most part of their own making. He, whose mind directs not wisely, will never take the right way; and he, whose body is crazy and feeble, will never be able to advance in it.

心理学必须研究思维和行为的适应功能。

极简主义不是关于减少，而是关于揭示本质。