All things in their being are good for something.
天生我才必有用。
Difficult circumstances serve as a textbook of life for people.
困难坎坷是人们的生活教科书。
Failure is the mother of success. -- Thomas Paine
失败乃成功之母。
For man is man and master of his fate.
人就是人，是自己命运的主人。
The unexamined life is not worth living. -- Socrates
混混噩噩的生活不值得过。 -- 苏格拉底
None is of freedom or of life deserving unless he daily conquers it anew. -- Erasmus
只有每天再度战胜生活并夺取自由的人，才配享受生活的自由。
Our destiny offers not the cup of despair, but the chalice of opportunity. So let us seize it, not in fear, but in gladness. -- R.M. Nixon
命运给予我们的不是失望之酒，而是机会之杯。因此，让我们毫无畏惧，满心愉悦地把握命运。-- 尼克松
Living without an aim is like sailing without a compass. -- John Ruskin
生活没有目标，犹如航海没有罗盘。-- 罗斯金