Rightness of limitation is essential for growth of reality.

From the very beginning of his education, the child should experience the joy of discovery.

Faith in the possibility of science, generated antecedently to the development of modern scientific theory, is an unconscious derivative from medieval theology.

Now in creative thought common sense is a bad master. Its sole criterion for judgement is that the new ideas shall look like the old ones. In other words it can only work by suppressing originality.

Each generation criticizes the unconscious assumptions made by its parent. It may assent to them, but it brings them out in the open.

In all education the main cause of failure is staleness.

On the ostensible exactitude of certain branches of human knowledge, including mathematics. The exactness is a fake.