出自先秦《荀子·性恶》引古语。不知儿子的为人，看看他的朋友就清楚了；不知国君是否贤明，看看他左右的大臣是什么德行就知道了。

Leadership is about inspiring people to do things they never thought they could do.

被大胆说出的预言，从来不会被迷信的人认为是愚笨无趣的。

I'm not perfect, but I'm trying my best.

It is not unlikely, but that there may be yet invented several other helps for the eye, as much exceeding those already found, as those do the bare eye.

To do things with words is not a special kind of doing， but a special kind of speaking.