The historian’s first duty is to the truth.
The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
The truth is that we are all alone in the world.
The best way to predict the future is to invent it.
世界上充满了显而易见的事物,但没有人会去注意它们。
The best way to predict the future is to create it.
"Happiness is not something ready made. It comes from your own actions."