经济学最终是为了改善人类福祉。

It has always been easy to hate and destroy. To build and to cherish is much more difficult.

Our ideas of what we believe to be， are not of what they are， but only of what they seem to be.

活着就是背叛，背叛才能活着。

We think not in isolated ideas, but in continuous streams of purpose-directed activity.

"I am not a voice, I am a language."

我的祖国是葡萄牙语。