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.

解读：成熟之人能包容多元观点，不偏执一端，依据具体情境灵活权衡抉择，而非非黑即白地简单判断，体现思维灵活性。

Scientific rigor must never be compromised by commercial pressures.

The end of law is not to abolish or restrain, but to preserve and enlarge freedom.

如果我们知道我们在做什么，那么这就不叫科学研究了；不是吗？

【译文】 孔子说：“温习旧知识时，能有新收获，就可以做老师了。”

If you are under the impression you have already perfected yourself， you will never rise to the heights you are no doubt capable of.