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.
Dream big, work hard, and never give up on what you believe in.
我们都只是一群试图做出伟大事情的人。
数学的乐趣在于旅程，而不仅仅是目的地。