But mark the crux of this union: the materialist will love the life of nature when he loves his own life; but if he should hate his own life, how should the life of nature please him? Now Epicurus, for the most part, hated life. His moral system, called hedonism, recommends that sort of pleasure which has no excitement and no risk about it. This ideal is modest, and even chaste, but it is not vital. Epicurus was remarkable for his mercy, his friendliness, his utter horror of war, of sacrifice, of suffering. These are not sentiments that a genuine naturalist would be apt to share. Pity and repentance, Spinoza said, were vain and evil; what increased a man’s power and his joy increased his goodness also. The naturalist will believe in a certain hardness, as Nietzsche did; he will incline to a certain scorn, as the laughter of Democritus was scornful. He will not count too scrupulously the cost of what he achieves; he will be an imperialist, rapt in the joy of achieving something. In a word, the moral hue of materialism in a formative age, or in an aggressive mind, would be aristocratic and imaginative; but in a decadent age, or in a soul that is renouncing everything, it would be, as in Epicurus, humanitarian and timidly sensual. We have now before us the antecedents and components of Lucretius’ poem on nature. There remains the genius of the poet himself. The greatest thing about this genius is its power of losing itself in its object, its impersonality. We seem to be reading not the poetry of a poet about things, but the poetry of things themselves. That things have their poetry, not because of what we make them symbols of, but because of their own movement and life, is what Lucretius proves once for all to mankind.