你不能让赞美或批评影响到你。陷入其中任何一种都是弱点。

Quality should never be compromised, but neither should our ethical responsibilities.

International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.

学者学习古人，开始时接触到的是粗浅的内容，中期接触到精华，最终领悟到其神妙变化。