未雨绸缪.
52.So said, so done.
说到做到,言出必行.
53.No weal without woe.
福兮祸所伏,祸兮福所倚.
54.We never know the worth of water till the well is dry.
井干方知水珍贵
55.Sharpening your axe will not delay your job of cutting wood.
磨刀不误砍柴功.
56.Where there is s will，there is a way.
有志者事竟成
57.The weather and the life are both unpredictable.
天有不测风云,人有旦夕祸福.
58.There is not any advantage without disadvantage.
有一利必有一弊.
59.You cannot have your cake and eat it too.
鱼与熊掌,不可得兼.
60.Childhood shows the man, as morning shows the day.
看人看年少,看天看破晓