"To live is the rarest thing in the world. Most people exist, that is all."
The double helix structure of DNA is one of the most beautiful and elegant structures in all of science.
我们这个时代最大的挑战不是技术上的，而是伦理上的。
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.