自由贸易能够提高国家整体的生产效益。
Every improvement in the circumstances of the society tends either directly or indirectly to raise the real rent of land, to increase the real wealth of the landlord, his power of purchasing the labour, or the produce of the labour of other people.
Geometry is knowledge of the eternally existent.
我们都是自己认知的囚徒。
化学不仅描述世界，它还改变世界。
我们今天所做的每一个决定，都在塑造我们为后代留下的水产养殖遗产。