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.
自然是一个活生生的整体，而不是一个死的集合体。
The key to survival is not just physical strength, but mental resilience.
每一次技术的应用，都要以可持续为前提。