An attack on values is inevitably seen as an act of subversion.

The three filters [against folly] operate through these particular questions: Literacy: What are the words? Numeracy: What are the numbers? Ecolacy: And then what?

It is a mistake to think that we can control the breeding of mankind in the long run by an appeal to conscience.

Thou shalt not transgress the carrying capacity

Using the commons as a cesspool does not harm the general public under frontier conditions, because there is no public, the same behavior in a metropolis is unbearable.

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

The population problem has no technical solution; it requires a fundamental extension in morality.