Never let age be a barrier to learning or discovery.

If you loan someone $20 and you never see them again. That makes it worth $20. 

民主的未来取决于民主社会自我改革和适应新挑战的能力。

寻找真理的人的存在，远比那些认为自己已经找到真理的人的存在更值得珍视。

The dead speak through us, in our dreams, in our words.

人类能够达到的最高活动是为了理解而学习，因为理解就是自由。