16.    Failure is the mother of success.
失败乃成功之母。
17.    Constant dropping wears away a stone.
滴水可以穿石。
18.    Nothing in the world is difficult for one who sets his mind on it.
世上无难事，只怕有心人。
-----中国谚语
19.    Where there is a will, there is a way.
有志者事尽成。
----- 中国谚语
20.    Genius is one per cent inspiration and ninety nine per cent perspiration.
天才是百分之一的天赋加上百分之九十九的勤奋。
-----T. A. Edison 爱迪生