"I don’t want to be known just as a tennis player. I want to be known as a good person."

行为由当前刺激情境和过去的强化历史决定。

西方现在相对于其他文明而言处于一个非凡的权力巅峰。

Children have never been very good at listening to their elders, but they have never failed to imitate them.

Democracy... while it lasts is more bloody than either aristocracy or monarchy. Remember, democracy never lasts long. It soon wastes, exhausts, and murders itself. There is never a democracy that did not commit suicide.