Physics is an organized body of knowledge about nature, and a student of it says that he is learning physics, not nature. Art, like nature, has to be distinguished from the systematic study of it, which is criticism.

Nature is inside art as its content, not outside as its model.

Real unity tolerates dissent and rejoices in variety of outlook and tradition, recognizes that it is man's destiny to unite and not divide, and understands that creating proletariats and scapegoats and second-class citizens is a mean and contemptible activity.

Myths, as compared with folk tales, are usually in a special category of seriousness: they are believed to have "really happened,"or to have some exceptional significance in explaining certain features of life, such as ritual. Again, whereas folk tales simply interchange motifs and develop variants, myths show an odd tendency to stick together and build up bigger structures. We have creation myths, fall and flood myths, metamorphose and dying-god myths.

Advertising - a judicious mixture of flattery and threats.

A public that tries to do without criticism, and asserts that it knows what it wants or likes, brutalizes the arts and loses its cultural memory. Art for art's sake is a retreat from criticism which ends in an impoverishment of civilized life itself.

Science begins with the world we have to live in, accepting its data and trying to explain its laws. From there, it moves toward the imagination: it becomes a mental construct, a model of a possible way of interpreting experience. The further it goes in this direction, the more it tends to speak the language of mathematics, which is really one of the languages of the imagination, along with literature and music. Art, on the other hand, begins with the world we construct, not with the world we see. It starts with the imagination, and then works toward ordinary experience.