科学的进步不是通过事实的积累,而是通过发现它们之间的新关系。
If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much.
The natural and moral world is the two-fold object of man's rational care.
端正自己的行为而不谋求私利,阐明正道而不计较功利
Letters are the biographer's gold mine; they reveal what official records conceal.