Labor economics is fundamentally about understanding people’s choices and constraints.

The market is a voting machine in the short term and a weighing machine in the long term.

译文：选择对方好的方面去学习并采纳，对方不好的方面就要对照自己要改正。赏析：每个人都有优点和缺点，别人的优点，我们要学习，别人的缺点，我们要反思。人只有在不断地学习和反思中成熟。

"I like looking nice, but I always put comfort over fashion. I don’t find thin girls attractive; be happy and healthy. I’ve never had a problem with the way I look. I’d rather have lunch with my friends than go to a gym."

The future of manufacturing lies in closed-loop systems.

我经常思考劳动和时间。

The past is always with us, for it feeds the present.