真理是时间的女儿。

在科学上没有平坦的大道

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)

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

●学而不思则惘

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

●万事开头难

人的一生应当这样度过：当回忆往事的时候

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