The preservation of the means of knowledge among the lowest ranks is of more importance to the public than all the property of all the rich men in the country.

I’m not afraid to be vulnerable. It’s part of being human.

戏剧的真正目的是提升观众的道德。

免费的疫苗比昂贵的治疗更有价值，但更难推广。

真正的进步发生在我们停止争论谁是对的，而开始合作于有效的事情上。