学习数学的唯一方法就是做数学。
努力工作和诚信是任何成功企业的基石。
The history of life is written in the language of chemistry.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
History has neither the desire nor the capacity to make men better or worse; it merely records what they have been and what they have done.