The world is before you and you need not take it or leave it as it was when you came in.

书籍是灵魂的镜子。

To create something that's never been seen before is the greatest challenge.

种树的最佳时间是20年前，第二好的时间是现在。

False happiness renders men stern and proud， and that happiness is never communicated. True happiness renders them kind and sensible， and that happiness is always shared.