Men and boys are learning all kinds of trades but how to make men of themselves. They learn to make houses; but they are not so well housed, they are not so contented in their houses, as the woodchucks in their holes.
(Henry David Thoreau (1817-1862), U.S. philosopher, author, naturalist. Letter, May 20, 1860, to Harrison Blake, in The Writings of Henry David Thoreau, vol. 6, p. 360, Houghton Mifflin (1906).)