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

真正的竞争总是在你已经完成的事情和你能够做到的事情之间。你衡量自己，只与自己比较，而不是别人。

The only limit is the one you set yourself.

实现明天的唯一限制是我们今天的疑虑。