向一个人展示他在错误中是一回事，让他掌握真理是另一回事。
It is one thing to show a man that he is in an error, and another to put him in possession of truth.
The pursuit of power is the primary goal of states in the international system.
The Golden Rule will never fail you. It is the foundation of all other virtues.
The real struggle is not between good and evil but between pain and pleasure.
