回忆往日，从中得乐，等于活了两次人生。

All is but lip-wisdom that wants experience. (Philip Sideney, British satesman)

Experience is not interesting till it begins to repeat itself, in fact, till it does that ,it hardly is experience. (Elizabeth Bowen, British novelist)

在科学上没有平坦的大道

Experience is the child of thought , and thought is the child of action. We cannot learn men from books. (Benjamin Disraeli, British statesman)

Experience is what you get when you don't get what you want. (Dan Stanfort, American brsinessman)

Expreience keeps a dear school, yet fools will learn in no other. (Benjamin Franklin, Americna president)

I have but one lamp wait which my feet are guided; and that is the lamp of experience. I know of no way of judging of the future but by the past. (Patrick Henry, Americna statesman)