Prudence never kindled a fire in the human mind; I have no hope for conservation born of fear.

If in a city we had six vacant lots available to the youngsters of a certain neighborhood for playing ball, it might be "development" to build houses on the first, and the second, and the third, and the fourth, and even the fifth, but when we build houses on the last one, we forget what houses are for.

We stand guard over works of art, but species representing the work of aeons are stolen from under our noses

No important change in ethics was ever accomplished without an internal chage in our intellectual emphasis, loyalties, affections, and convictions.

One swallow does not make a summer, but one skein of geese, cleaving the murk of March thaw, is the Spring.

Every farm woodland, in addition to yielding lumber, fuel and posts, should provide its owner a liberal education. This crop of wisdom never fails, but it is not always harvested.

An Ecologist lives in a world of wounds.