The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.

The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.

每小时，她想着，有人锻造戒指，有人雕刻摇篮，有人输掉战争。