Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them—and then, the opportunity to choose.

One does not learn computing by using a hand calculator, but one can forget arithmetic.

行为法则可以从基本的生理原则中推导出来。

It's not about having time, it's about making time.