No one should be able to enter a wilderness by mechanical means.

Ruin is the destination toward which all men rush, each pursuing his own best interest in a society that believes in the freedom of the commons.

What features of your daily life do you expect to be improved by a further increase in population?

Throughout history, human exploitation of the earth has produced this progression: colonize-destroy-move on.

The social arrangements that produce responsibility are arrangements that create coercion, of some sort.

A finite world can support only a finite population; therefore, population growth must eventually equal zero.

Education can counteract the natural tendency to do the wrong thing, but the inexorable succession of generations requires that the basis for this knowledge be constantly refreshed.