(Technology reliability) x (Human reliability) = (System reliability)

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.

The morality of an act is a function of the state of the system at the time it is performed.

The greatest folly is to accept expert statements uncritically. At the very least, we should always seek another opinion.

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

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

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