How often do we tell our own life story? How often do we adjust, embellish, make sly cuts? And the longer life goes on, the fewer are those around to challenge our account, to remind us that our life is not our life, merely the story we have told about our life.

无限的概念不仅仅是一个数学抽象，而是一个物理现实。

"Every book is a door to another world, waiting to be opened by the curious mind."

"The number one benefit of information technology is that it empowers people to do what they want to do. It lets people be creative. It lets people be productive. It lets people learn things they didn't think they could learn before, and so in a sense it is all about potential."

金钱的损失是所有损失中最小的，但信心的损失是最大的。