On matters beyond his ken a gentleman speaks with caution. If names are not right, words are misused. When words are misused, affairs go wrong. When affairs go wrong, courtesy and music droop, law and justice fail. And when law and justice fail them, a people can move neither hand nor foot. So a gentleman must be ready to put names in speech, to put words into deeds. A gentleman is nowise careless of words.

If you don't know how to live, why wonder about death?

Study the past if you would define the future. I am not one who was born in the possession of knowledge; I am one who is fond of antiquity, and earnest in seeking it there. Learning without thought is labor lost; thought without learning is perilous.

True wisdom is knowing what you don't know

The difference between ordinary and extraordinary is that little extra. The question isn't who is going to let me; it's who is going to stop me you don't have to see the whole staircase, just take the first step the man who moves a mountain begins by carrying away small stones.

When the wind blows,the grass bends.

To err and not reform, this may indeed be called error.