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

Value is a relative concept: the value of each action is determined by comparing it with other possible actions.

Freedom in a commons brings ruin to all.

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

Fundamentalists are panicked by the apparent disintegration of the family, the disappearance of certainty and the decay of morality. Fear leads them to ask, if we cannot trust the Bible, what can we trust?

There is nothing more dangerous than a shallow thinking compassionate person