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

The essence of dramatic tragedy is not unhappiness. It resides in the solemnity of the remorseless working of things.

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

Indeed, our particular concept of private property, which deters us from exhausting the positive resources of the earth, favors pollution.

Ecological differentiation is the necessary condition for coexistence.

Economists (and others) who are satisfied with nature-free equations develop a dangerous hubris about the potency of our species

Thou shalt not transgress the carrying capacity