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

The only thing we can really count on in this uncertain world is human unreliability itself.

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.

Religious reasons, which is no reason. I notice Skeptic had a review of Dennett's book, Darwin's Dangerous Idea. Religious reasons amount to what Dennett terms "skyhooks." Do you believe in skyhooks? I don't.

The exquisite sight, sound, and smell of wilderness is many times more powerful if it is earned through physical achievement, if it comes at the end of a long and fatiguing trip for which vigorous good health is necessary. Practically speaking, this means that no one should be able to enter a wilderness by mechanical means.

In a competitive world of limited resources, total freedom of individual action is intolerable

Every plausible policy must be followed by the question 'And then what?'