There are tracts in my life that are bare and silent. They are the open spaces where my busy days had their light and air.

The only way to achieve the impossible is to believe it is possible.

You can fool all the people some of the time, some of the people all the time, but you cannot fool all the people all the time.

只要有一个程序，我们将永远不会用完所有要编程的东西。