The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

A good mathematician is not one who knows all the answers, but one who asks the right questions.

To understand a program you must become both the machine and the program.

解释：要想人爱护自己，必须先爱护别人；要想人顺从自己，必须先顺从别人。

All architecture is shelter, all great architecture is the design of space that contains, cuddles, exalts, or stimulates the persons in that space.

Sometimes it’s the journey that teaches you a lot about your destination.