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Years bring wisdom. 年岁带来智慧 (来源：最老牌的英语学习网站 http://www.EnglishCN.com)

Years know more than books. 岁月比书本知道的多。

Yesterday will not be called again. 昨日不再来。

You cannot be lost on a straight road. 走直路，不迷途。

You cannot eat your cake and have it. 事难两全。

You can not make a crab walk straight. 不要强人所难。

You may take a horse to the water, but you cannot make him drink. 不能强人所难。

You never know what you can do till you try. 时间才知真本领。

Youth look forward and age backward. 青年人展望未来，老年眷恋过去。