水太清了就会见不到鱼，人太精明了就没有朋友。冠冕的玉旒，是用来遮蔽视线；用丝棉塞耳，是为了减弱听觉。

If you meddle in other people's marriages you may lose a friend, but acquire his wife.

If you can keep your head when all about you are losing theirs and blaming it on you...

As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

The quality of an organization's discipline determines the quality of its performance.

预测未来的最好方法就是设计它。