数学是人类精神最美丽和最强大的创造。
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.
Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.
做伟大工作的唯一方法是热爱你所做的事。