在快速变化的市场中，唯一不变的就是变化本身，我们必须学会适应。

The art of living is to know when to hold fast and when to let go.

I can't go on, I'll go on.

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

Life is a song, love is the music.

Psychology must be based on observable facts, not speculation.

You have to be able to center yourself at all times. That's what makes a champion.