学习数学的唯一方法就是做数学。

I ought to have judged by deeds and not by words.

Reality is not only stranger than we suppose, but stranger than we can suppose.

人们不能总是认为感觉就是一切。没有形式，艺术就什么都不是。

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.