The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
在最低阶层中保存知识的手段对公众来说比国家中所有富人的所有财产都更重要。
You have to be willing to put in the time, the effort, and the energy to be great.
I don't want to live forever, but I do want to live while I'm alive.
Hope is not an emotion, but a choice.