I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.

When we understand knowledge-based systems, it will be as before -- except our fingertips will have been singed.

数学的美在于它让我们看到世界上不立即显现的模式和结构。

"A story is only as true as the emotions it evokes."

Don’t be afraid to fail, be afraid not to try.

一个人能做的最革命的事情，就是大声宣告正在发生的事情。