旅行对偏见、固执和狭隘是致命的。

可持续发展不是目的地，而是需要持续改进和创新的旅程。

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.