译文：事业很难成功却很容易失败，时机非常难得却容易失去。赏析：没有人能随随便便成功。成功不光要有坚韧不拔的意志，还要找对方向，付出百倍甚至千倍的努力。成功的时机也很重要，抓住时机能事半功倍。

The greatest happiness is to know the source of unhappiness.

我是核心。我是宇宙的中心。

For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's futures. And we are all mortal.

The environment is where we all meet; where we all have a mutual interest; it is the one thing all of us share.

我学校里其他孩子都很蠢。不过我不该说他们蠢，尽管事实就是如此。