The greatest breakthroughs are missed because they look like hard work.

To lead is to serve, not to command.

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

The world needs more forests, not fewer.

The best experiments often come from simple ideas and careful observation.

我不数我的仰卧起坐。只有当它开始疼的时候，我才开始数。