When making something， always get a few extras — extra material， extra parts， extra space， extra finishes. The extras serve as backups for mistakes， reduce stress， and fill your inventory for the future. They are the cheapest insurance.

Invention is not enough. Tesla invented the electric power we use, but he struggled to get it out to people. You have to combine both things: invention and innovation focus, plus the company that can commercialize things and get them to people.

我们不是在制造汽车，我们是在培养制造汽车的人。

比较是幸福的最大杀手。如果一定要比较，就拿昨天的自己作为比较对象。

Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful, but most people will die tomorrow night.