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

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

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

Education can counteract the natural tendency to do the wrong thing, but the inexorable succession of generations requires that the basis for this knowledge be constantly refreshed.

To say that we mutually agree to coercion is not to say that we are required to enjoy it, or even to pretend we enjoy it.

In an approximate way, the logic of commons has been understood for a long time, perhaps since the discovery of agriculture or the invention of private property in real estate.

Society does not need more children; but it does need more loved children. Quite literally, we cannot afford unloved children - but we pay heavily for them every day. There should not be the slightest communal concern when a woman elects to destroy the life of her thousandth-of-an-ounce embryo. But all society should rise up in alarm when it hears that a baby that is not wanted is about to be born.