There are two kinds of violence of peace， that is the law and etiquette.

There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.

一棵树的真正价值不在于它的板材体积，而在于它的根系和影响。