After all, despite the economic advantage to firms that employed child labor, it was in the social interest, as a national policy, to abolish it - removing that advantage for all firms.

The environmental crisis is a sign that the ecosphere is now so heavily strained that its continued stability is threatened. It is a warning that we must discover the source of this suicidal drive and master it before it destroys the environment-and ourselves.

Seen that way, the wholesale transformation of production technologies that is mandated by pollution prevention creates a new surge of economic development.

The modern technologist is less 'sorcerer' and more 'sorcerer's apprentice'.

In general, any productive activity which introduces substances foreign to the natural environment runs a considerable risk of polluting it.

No action is without its side effects.

It is simply economically impossible to require controls that even approach zero emissions.