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.

Incommensurables cannot be compared.

It takes five years for a willing person's mind to change. Have patience with yourself and others when treading in an area protected by a taboo.

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

Freedom in a commons brings ruin to all.

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

Moreover, the practical recommendations deduced from ecological principles threaten the vested interests of commerce; it is hardly surprising that the financial and political power created by these investments should be used sometimes to suppress environmental impact studies.