Experience never misleads; what you are missed by is only your judgement, and this misleads you by anticipating results from experience of a kind that is not produced by your experements. (Leonardo Da Vinci, Italian painter)

　　经验永远不会对你做错误的引导;把你引导错的只是你自己的判断，而你的判断之所以对你发生误导的作用，乃是由于它根据那种并非借着实验而产生的经验来预料的结果。(意大利画家 达芬奇)

　　Experience without learning is better than learning without excperi-ence. (Bertuand Russell, British philosopher and mathematician)

　　有经验而无学问胜于有学问而无经验。(英国哲学家、数学家 罗素.B.)

　　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)

　　我只拿一盏灯来指引我的脚步，而那盏灯就是经验，对于未来，我只是能以过去来判断。(美国政治家 享利.P.)

　　Mistakes are an essential part of education. (Bertrand Russell, Bdritish philosopher)

　　从错误中吸取教训是教育极为重要的一部分。(英国哲学家 罗素 . B .)