实现明天的唯一限制将是我们今天的疑虑。

If you say you want to automate cars and save people’s lives, the skills you need for that aren’t taught in any particular discipline. I know – I was interested in working on automating cars when I was a Ph.D. student in 1995.

时间不会治愈伤口，只会将它们埋在遗忘的层层之下。