The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.
心理学不仅要描述意识的事实，还要解释它们。
结构之美在于其逻辑性。
一切东西的真实价格，即对于想要获得它的人来说真正付出的代价，是获得它所付出的辛劳和麻烦。
If you want to be the best, you have to do things that other people aren't willing to do.