真相很少是纯粹的，也从不简单。
"The truth is rarely pure and never simple."
"You must be the change you wish to see in the world."
All happiness depends on courage and work.
It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.
如果你没惹怒某些人，说明你做得不对。
The most important single aspect of software development is to be clear about what you are trying to build.
无知永远不比知识更好。
预测未来的最好方法就是创造未来。