Walden 精彩片段：
Conclusion
To the sick the doctors wisely recommend a change of air and
scenery. Thank Heaven, here is not all the world. The buckeye does
not grow in New England, and the mockingbird is rarely heard here.
The wild goose is more of a cosmopolite than we; he breaks his fast
in Canada, takes a luncheon in the Ohio, and plumes himself for the
night in a southern bayou. Even the bison, to some extent, keeps
pace with the seasons cropping the pastures of the Colorado only
till a greener and sweeter grass awaits him by the Yellowstone. Yet
we think that if rail fences are pulled down, and stone walls piled
up on our farms, bounds are henceforth set to our lives and our
fates decided. If you are chosen town clerk, forsooth, you cannot
go to Tierra del Fuego this summer: but you may go to the land of
infernal fire nevertheless. The universe is wider than our views of
it.