I think the subject which will be of most importance politically is mass psychology.... Its importance has been enormously increased by the growth of modern methods of propaganda. Of these the most influential is what is called 'education.' Religion plays a part, though a diminishing one; the press, the cinema, and the radio play an increasing part.... It may be hoped that in time anybody will be able to persuade anybody of anything if he can catch the patient young and is provided by the State with money and equipment.

The very best proof that something can be done is that someone has already done it.

Artists are on the average less happy than men of science.

To be able to fill leisure intelligently is the last product of civilization, and at present very few people have reached this level.

The secret to happiness is to face the fact that the world is horrible.

Science is what we know, and philosophy is what we don't know.

Science, by itself cannot, supply us with an ethic.