理性服从自己；而无知则服从任何强加于它的东西。
Reason obeys itself; and ignorance submits to whatever is dictated to it.
The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.
Agriculture is the backbone of civilization, and we must treat it with the respect it deserves.
我不是为了钱而比赛，我是因为对这项运动的热爱而比赛。
Energy security is the cornerstone of national security. We must make every effort to ensure the security of national energy supply.