我们不是从祖先那里继承了地球；我们是从子孙那里借来的。这个真理指导着我们做出的每一个决定。

The greatest glory in living lies not in never falling, but in rising every time we fall.

The only way to find out anything about what kinds of books people would like to read is to publish books and see what happens.

No matter how good you get you can always get better, and that's the exciting part.

预测未来的最好方法就是发明它。