Ignorance of what real learning is and a consequent suspicion of it materialism and a consequent intellectual laxity both of these have done destructive work in the colleges.

Whatever the medium there is the difficulty challenge fascination and often productive clumsiness of learning a new method: the wonderful puzzles and problems of translating with new materials.

Agricultural practice served Darwin as the material basis for the elaboration of his theory of Evolution which explained the natural causation of the adaptation we see in the structure of the organic world. That was a great advance in the knowledge of living nature.

Reading furnishes the mind only with materials of knowledge it is thinking that makes what we read ours.

This also turned out to be negative so there is no material in the Central Intelligence Agency either in the records or in the mind of any of the individuals that there was any contact had or even contemplated with him.

Despite our very recent appearance on the planet humanity combines arrogance with increasing material demands even as we become more numerous. Our toughness is a delusion. Have we the intelligence and discipline to vigilantly guard against our tendency to grow without limit?

Man never made any material as resilient as the human spirit.

The imagination equips us to perceive reality when it is not fully materialized.

Further for once I like the idea that people who think I'm a constant voice for the furthering of the imagination have to see that interest in a more materialistic fashion.

We're living in a time when the world has suddenly discovered India because it's run out of raw material for its imagination. The raw materials for imagination are inexhaustible here.