Work, as we usually think of it, is energy expended for a further end in view; play is energy expended for its own sake, as with children's play, or as manifestation of the end or goal of work, as in "playing" chess or the piano. Play in this sense, then, is the fulfillment of work, the exhibition of what the work has been done for.

The ups and downs of this cosmos may sometimes be acknowledged to be metaphorical ups and downs, but until about Newton's time most people took the "up" of heaven and the "down" of hell to be more or less descriptive.

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.

It is of the essence of imaginative culture that it transcends the limits both of the naturally possible and of the morally acceptable.

A reader who quarrels with postulates, who dislikes Hamlet because he does not believe that there are ghosts or that people speak in pentameters, clearly has no business in literature. He cannot distinguish fiction from fact, and belongs in the same category as the people who send checks to radio stations for the relief of suffering heroines in soap operas.

We do not live in a centred space any more, but have to create our own centres.

Separatism is a very healthy movement within culture. It's a disastrous movement within politics and economics.