Are we to regard the world of nature simply as a storehouse to be robbed for the immediate benefit of man?

Where there is hypocrisy, there is hope.

In calling society an ecological system we are not merely using an analogy; society is an example of the general concept of an "ecosystem" that is, an ecological system of which biological systems - forests, fields, swamps - are other examples.

The right to have children should be a marketable commodity, bought and traded by individuals but absolutely limited by the state.

Private property is a means, and neither its abolition nor its unrestricted right should be an end in itself.

I have been gradually coming under the conviction, disturbing for a professional theorist, that there is no such thing as economics - there is only social science applied to economic problems.

As far as many statistical series that are related to activities of mankind are concerned, the date that divides human history into two equal parts is well within living memory. The world of today is as different from the world I was born in as that world was from Julius Caesar s. I was born in the middle of human history, to date, roughly. Almost as much has happened since I was born as happened before.