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

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.

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

There is nothing more dangerous than a shallow thinking compassionate person

Using the commons as a cesspool does not harm the general public under frontier conditions, because there is no public, the same behavior in a metropolis is unbearable.

The god who is reputed to have created fleas to keep dogs from moping over their situation must also have created fundamentalists to keep rationalists from getting flabby. Let us be duly thankful for out blessings.