The best preparation for tomorrow is doing your best today.

　　对明天做好的准备就是今天做到最好!

　　The reason why a great man is great is that he decides to be a great man.

　　伟人之所以伟大，是因为他立志要成为伟大的人。

　　Suffering is the most powerful teacher of life.

　　苦难是人生最伟大的老师。

　　Adversity is a good discipline.

　　苦难是磨练人的好机会。

　　A man can't ride your back unless it is bent.

　　你的腰不弯，别人就不能骑在你的背上。

　　Although again sweet candy, also has a bitter day.

　　即使再甜的糖，也有苦的一天。

　　Sharp tools make fast work.

　　工欲善其事，必先利其器。

（编辑：何莹莹）