The strength of a response tendency depends on the amount of reinforcement received.

儿童的进步不是取决于年龄，而是取决于能够自由地观看他周围的一切。

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.

领导力既关乎倾听，也关乎引导。