The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.
The world is a stage, but the play is badly cast.
实证研究中最重要的是要清楚你想要回答的问题。
The world has nothing to fear from military ambition in our Government.