One of the penalties of an ecological education is that one lives alone in a world of wounds. Much of the damage inflicted on land is quite invisible to laymen. An ecologist must either harden his shell and make believe that the consequences of science are none of his business, or he must be the doctor who sees the marks of death in a community that believes itself well, and does not want to be told otherwise. One sometimes envies the ignorance of those who rhapsodize about a lovely countryside in process of losing its topsoil, or is afflicted with some degenerative disease of its water system, fauna, or flora.
Aldo Leopold, 1947
See the The Aldo Leopold Foundation for more information about Aldo Leopold.