Nature, as man has always known it, he knows no more. Since he has learned to esteem signs above symbols, to suppress his emotional reactions in favor of practical ones and make use of nature instead of holding so much of it sacred, he has altered the face, if not the heart, of reality.

The intellectual treatment of any datum, any experience, any subject, is determined by the nature of our questions, and only carried out in the answers.

To trace the development of mind from earliest times ... requires ... not a categorical concept, but a functional one.... The most promising operational principle for this purpose is the principle of individuation.

The first impression of a work of art is its otherness from reality.

The development of beings with minds is probably the highest individuation the world has ever known, and its prehistory is the history of life on earth.

If we would have new knowledge, we must get a whole world of new questions.

The power of magic has no known limits. A person knows, in a fair way, his own physical capacities, the weight of the blows he can deal, the furthest range of his arrows, the strength of his voice, the speed and endurance of his running; but the reaches of his mind are indefinite and, to his feeling, infinite.