阅读使人充实，谈论使人机敏，写作使人精确。

我相信教育改变世界的力量。

The young do not know enough to be prudent, and therefore they attempt the impossible, and achieve it, generation after generation.

The search for happiness is one of the chief sources of unhappiness.

Innovation is the specific instrument of entrepreneurship. The act that endows resources with a new capacity to create wealth.

无产阶级平等要求的实际内容都是消灭阶级的要求。