To be natural is such a very difficult pose to keep.

Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.

You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

最好的艺术是让你以不同的方式看待世界的艺术。

在我们认识到我们过去所做的很多事情是非常愚蠢的之前，我们不会变得更聪明。