The true joy of mathematics lies in the act of discovery, not just the result.
The best biographies are those that make the reader feel they have met the subject in person.
科学最重要的意义在于它为我们提供了一种方法,可以提出能够明确回答的问题。
孩子是最诚实的评论家;他们会直接告诉你他们的想法。