No pains，no gains不劳无获；种豆得豆，种瓜得瓜；
practice makes perfect 实践出真知
seeing is believing耳听为虚，眼见为实
man lives just a generation人生一世，草生一代
Deliver not your word by number but by weight. 话不在多，在有分量
Books and friends should be few but good. 好书好友不在多，在于精
A thousand friends are few, one enemy is too many. 一千个朋友不嫌多，一个敌人却太多.
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