Religious reasons, which is no reason. I notice Skeptic had a review of Dennett's book, Darwin's Dangerous Idea. Religious reasons amount to what Dennett terms "skyhooks." Do you believe in skyhooks? I don't.

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

We see only what we have names for.

The optimum population is, then, less than the maximum.

There is nothing more dangerous than a shallow thinking compassionate person

Every plausible policy must be followed by the question 'And then what?'

A coldly rationalist individualist can deny that he has any obligation to make sacrifices for the future.