对这个世界有所助益是获得快乐的唯一途径。
Je est un autre. Tant pis pour le bois qui se trouve violon, et nargue aux inconscients, qui ergotent sur ce qu'ils ignorent tout à fait!
The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.