After all, for mankind as a whole there are no exports. We did not start developing by obtaining foreign exchange from Mars or the moon. Mankind is a closed society.

The real problems of our planet are not economic or technical, they are philosophical. The philosophy of unbridled materialism is being challenged by events.

Our task is to look at the world, and see it whole.

Modern economic thinking...is peculiarly unable to consider the long term and to appreciate man's dependence on the natural world.

Our task - and the task of all education - is to understand the present world, the world in which we live and make our choices.

The richer a society, the more impossible it becomes to do worthwhile things without immediate pay-off.

I think I should not go far wrong if I asserted that the amount of genuine leisure available in a society is generally in inverse proportion to the amount of labor-saving machinery it employs.