A world community can exist only with world communication, which means something more than extensive short-wave facilities scattered; about the globe. It means common understanding, a common tradition, common ideas, and common ideals.

When we listen to the radio, look at television and read the newspapers we wonder whether universal education has been the great boon that its supporters have always claimed it would be.

Too few have the courage of my convictions.

The policy of repression of ideas cannot work and never has worked.

To solve a problem it is necessary to think. It is necessary to think even to decide what facts to collect.

A civilization in which there is not a continuous controversy about important issues is on the way to totalitarianism and death

Education is a kind of continuing dialogue, and a dialogue assumes different points of view.