1.The membrance of the past is the teacher of the future.
前事不忘,后事之师.

2.A hedge between keeps friendship green.
君子之交淡如水.

3.Take time while time is, for time will away.
机不可失,失不再来.

4.Two heads are better than one.
集思广益.

5.Provide for a rainy day.
未雨绸缪.

6.True blue will never strain.
真金不怕火炼.

7.You have to believe in yourself. That's the secret of success.
必须相信自己,这才是成功的秘诀.

8.A sparrow cannot understand the ambition of a swan.
燕雀安知鸿鹄之志.

9.A straight foot is not afraid of a crooked shoe.
身正不怕影子歪.

10.There is plenty of fish in the sea.
天涯何处无芳草.

11.Cats hind their paws.
大智若愚.

12.Judge not a book by its cover.
人不可貌相,海水不可斗量.

13.All shall be well, Jack shall have jill.
有情人终成眷属.

14.The good seaman is known in bad weather.
惊涛骇浪,方显英雄本色.

15.Where there is life, there is hope.
留得青山在,不怕没柴烧.

16.All thing are difficult before they are easy.
万事开头难.

17.Life is not all roses.
人生并不都是康庄大道.

18.Heaven never seals off all the exits.
天无绝人之路.

19.Is it not a joy to have friends come from afar?
有朋自远方来不亦乐乎？

20.Reading is always profitable.
开卷有益.