在数学的领域里,每一个问题都是发现新事物和深刻见解的机会。
我不是在试图变得酷,我只是在做我自己。
The best time to plant a tree was 20 years ago. The second best time is now.
False facts are highly injurious to the progress of science, for they often endure long.  
The beauty of literature is that it allows us to live a thousand lives in one.