The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.

我不后悔任何事情，因为每一步都让我走到了这里。

渔业技术必须首先服务于保护，其次才是利润。

最伟大的定理是那些揭示隐藏联系的定理。

粮食富裕，人们就知道礼节；衣食丰足，人们就懂得荣辱。