Science is about understanding the world, and medicine is about applying that understanding to help people.

解释：不在农忙时役使百姓而耽误农时，那么可以保证百姓富裕。

The beauty of a program is in its simplicity.

A man knows when he is growing old because he begins to look like his father.

I always believe that the best is yet to come.

我们肩负着对未来的责任。