To find out the truth about the natural world, to validate it by careful and repeated experiment, to build on that knowledge wherever it may lead. To understand physical reality, in other words, to work with it as it is and not to play games by believing only what it makes us feel good to believe。

认识自然，就是通过实验检验各种假设，是什么样就是什么样，符合什么规律就是符合什么规律，不因为我们个人的喜爱，不因为我们个人的感受而相信，相信客观事实。

社会也一样，一个社会理论，不论其听起来是不是美好，关键看能否符合这个社会发展的现实， 和在这个社会所产生什么样的结果。