Calypso, therefore, announces to him the divine plan: he must make a raft and commit himself to the waters. She has to obey, for is she not really conquered by Ulysses? Certainly the divine order requires her to send the man away from her island. Yet the return is by no means made easy, but is to be won by hardest effort; he must grapple with the waves, with angry Neptune after leaving Calypso. No wonder that Ulysses shuddered at the proposition; truly he has the choice between the devil and the deep sea, and he manfully chooses the latter. First, however, the Goddess has to take the great oath "by Earth, by Heaven above and Styx below," the sum total of the physical universe, from whose presence the perjurer cannot escape, though a God, that she is not practicing any hidden guile against her much-desired guest. Always the doubter, the skeptic Ulysses will show himself, even toward a divinity. He must test the Gods also, as well as man. Very beautiful and humane is the answer of the Goddess: "Such things I plan and deliberate for thee as I would devise for myself, were I in so great straits. For I too have a righteous mind, and the heart within my breast is not of iron, but compassionate." Has a change come over the Goddess through this visit from Olympus? Hardly could she have felt this before, else she would have sent away Ulysses of her own accord. Her adjustment to the divine decree seems now to be internal, and not simply a yielding to an external power. Still the separation costs her deep pangs, and she wonders how Ulysses, a mortal, can give her up, who is immortal, with all her beauty and the pleasures of her paradise. The answer of Ulysses reveals the man in his present stale of mind. He recognizes Calypso as beautiful, deathless, ever young; still he must have something more than sensuous life and beauty; though it last forever, it can never satisfy. Not to be compared with the Goddess in grace and stature, is his wife Penelope, still he longs for his home; "yea, though some God wreck me on the wine-dark deep, I shall endure." But there is no doubt the other side is also present in Ulysses; he has within himself a strong sensuous nature with which is the battle, and the poem does not disguise the matter, for he is again ready to enjoy all the pleasures of Calypso's bower, after this paroxysm of home-sickness.