数学是理性的音乐。
Mathematics is the music of reason.
We make up horrors to help us cope with the real ones.
世界上最宝贵的资源不是石油,而是人类的潜力。
Have you given any thought to your future?
The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.