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Language is not a cultural artifact that we learn the way we learn to tell time or how the federal government works. Instead, it is a distinct piece of the biological makeup of our brains.

The cowards never started and the weak died along the way. That leaves us.

The absence of alternatives clears the mind marvelously.

I'm not trying to be the next anybody. I'm trying to be the first me.

The mind is an instrument of survival before it is an instrument of thought.

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

經(jīng)濟(jì)模型的價(jià)值在于其解釋和預(yù)測(cè)的能力。