"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."

富贵不能淫，贫贱不能移。越是富贵，越是不能骄傲；越是贫穷，越要坚守志向。虽然尊敬贤能的人，但也不能贬斥那些愚笨不肖的人。