Such a constant dragging in of astronomical lore may seem to us puerile or pedantic; but for Dante the astronomical situation had the charm of a landscape, literally full of the most wonderful lights and shadows; and it also had the charm of a hard-won discovery that unveiled the secrets of nature. To think straight, to see things as they are, or as they might naturally be, interested him more than to fancy things impossible; and in this he shows, not want of imagination, but true imaginative power and imaginative maturity. It is those of us who are too feeble to conceive and master the real world, or too cowardly to face it, that run away from it to those cheap fictions that alone seem to us fine enough for poetry or for religion. In Dante the fancy is not empty or arbitrary; it is serious, fed on the study of real things. It adopts their tendency and divines their true destiny. His art is, in the original Greek sense, an imitation or rehearsal of nature, an anticipation of fate. For this reason curious details of science or theology enter as a matter of course into his verse. With the straightforward faith and simplicity of his age he devours these interesting images, which help him to clarify the mysteries of this world. There is a kind of sensualism or aestheticism that has decreed in our day that theory is not poetical; as if all the images and emotions that enter a cultivated mind were not saturated with theory. The prevalence of such a sensualism or aestheticism would alone suffice to explain the impotence of the arts. The life of theory is not less human or less emotional than the life of sense; it is more typically human and more keenly emotional. Philosophy is a more intense sort of experience than common life is, just as pure and subtle music, heard in retirement, is something keener and more intense than the howling of storms or the rumble of cities. For this reason philosophy, when a poet is not mindless, enters inevitably into his poetry, since it has entered into his life; or rather, the detail of things and the detail of ideas pass equally into his verse, when both alike lie in the path that has led him to his ideal. To object to theory in poetry would be like objecting to words there; for words, too, are symbols without the sensuous character of the things they stand for; and yet it is only by the net of new connections which words throw over things, in recalling them, that poetry arises at all. Poetry is an attenuation, a rehandling, an echo of crude experience; it is itself a theoretic vision of things at arm’s length.