The true teacher defends his pupils against his own personal influence. He inspires self-distrust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.

永远愿意学习，因为你停止学习的那一刻就是你停止成长的那一刻。

"La única manera de librarse de la tentación es caer en ella."

积极强化的实施方式比强化的数量更重要。

没有道德的效率只是在错误方向上的速度。