Never globalize a problem if it can possibly be dealt with locally.

But it is no good using the tongs of reason to pull the Fundamentalists' chestnuts out of the fire of contradiction. Their real troubles lie elsewhere.

We can't cure a shortage by increasing the supply.

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

You cannot do only one thing.

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

A technical solution may be defined as one that requires a change only in the techniques of the natural sciences, demanding little or nothing in the way of change in human values or ideas of morality.