1、权然后知轻重，度然后知长短。
Having weighted it we know is importance.
Having considered it we know is drawback.
2、除了实验之外，没有别的办法可以识别错误。
Nothing but experiment can distinguish mistakes.
3、科学是指挥官，实践是战士。
Science is a commander while practice is a soldier.
4、善学者尽其理，善行者究其难。
Find out how to learn to learn well, Find out how to go to go farther.
5、传闻不如亲见，视影不如察形。
Seeing is better than hearing and in vesting is better than seeing.
6、知之者不如行之者。
To do is better than to say.
7、实验是科学之父。
Experiment is the father of science.