到处都有痛苦。

The root of all superstition is that men observe when things hit， and not when they miss， and commit to memory the one， and pass over the other.

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.

Sometimes the questions are complicated and the answers are simple.

追求幸福与追求快乐不同；幸福是灵魂的一种状态，而不仅仅是感觉。