"If the sleep of mortals were continuous and identical with life; if under the star of day all living beings languished on the earth in utter rest, and no work was wrought; if the oxen ceased bellowing in the meadows, the beasts roaring in the forests, the birds singing in the air, the bees buzzing, and the butterflies skimming over the fields; if no voice nor motion except-that of the waters, winds, and tempests anywhere existed, the universe would indeed be useless; but would there be less happiness or more misery than there is to-day?"