Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.

I don’t know how to explain it, but I feel like I was born to do this.

The arc of the moral universe is long， but it bends toward justice.

The best way to predict the future is to design it.

It's not the size of the dog in the fight, it's the size of the fight in the dog.