经过不断改善自己的动作，幼儿从独立活动中获得喜悦。

Market failures are often not failures of markets, but failures of market design.

唯一能让你成为英雄的是你的勇气。

The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the language of the past, the nearer I shall feel the breath of the centuries.