1. First come the Sirens, whom Ulysses will have to meet again, as he has often met them before. Indeed Circe herself was once a Siren, a charmer through the senses. The present Sirens are singers, and entice to destruction through the sense of hearing, inasmuch as "heaps of bones lie about them," evidently the skeletons of persons who have perished through their seductive song. Pass them the man must; what is to be done? He will have somehow to guard against his sensuous nature and keep it from destroying itself. Yet on the other hand he must enjoy, which is his right in this world of sensations; each good music must be heard. So Circe tells of the scheme of putting wax into his companions' ears, while he is bound to the mast. Already Tiresias warned Ulysses in the Underworld to hold his appetite in check and that of his companions, if he wished to return home. This warning Circe now repeats, indeed she repeats in a new mythical form her own experience, for she, the Siren, has also been met by Ulysses and mastered. Yet these later charmers seem to have been more dangerous. When they are passed, a new peril rises of necessity.
2. Next we behold an image, or rather two sets of images, of the grand dualism of existence. That escape from the Sirens is really no solution of the problem, it is external and leaves the man still unfree, still subject to his senses. There must be somehow an inner control through the understanding, an intellectual subordination. But just here trouble springs up again. The mind has two sides to it, and is certain to fall into self-opposition. Two are the ways after parting from the Sirens, says Circe: "I shall tell thee of both."
One way is by the Plangctæ (rocks which clasp together); here no bird can fly through without getting caught, even the doves of Zeus pay the penalty. "No ship of men, having gone thither, has ever escaped"—except the God-directed Argo: surely a sufficient warning. Then the second way also leads to two rocks, but of a different kind; at their bases in the sea are found Scylla, the monstrous sea-bitch, on one side, and Charybdis, the yawning maelstrom, on the other; between them Ulysses must pass with his ship and companions.
It is manifest that here are two alternatives, one after the other; the first is that of the Plangctæ, the Claspers, which mean Death, unless they be avoided, yet this avoidance does not always mean Life. We can trace the connection with the Sirens: the absolute resignation to the senses is license, is destruction; we may say the same thing of the opposite, the absolute suppression of man's sensuous being is simply his dissolution. Hence the extremes appear; the moral and the immoral extremes land us in the same place; they are the two mighty rocks which may smite together and crush the poor mortal who happens to get in between the closing surfaces. If we understand the image, it holds true of excess on either side; excessive indulgence is overwhelmed by its opposite, so is excessive abstinence; they co-operate, like two valves, for the destruction of the one-sided extremist. Truly Greek is the thought, for the Greek maxim above all others was moderation, no over-doing. Such then are the Plangctæ, which Ulysses must avoid wholly, if he wishes to escape. Still, even the danger is by no means over.
There is the second way which introduces a new alternative; the path of moderation has its difficulty, it too forks and produces perplexity and peril to the voyager. Here is the point where Scylla and Charybdis appear, a new set of extremes, between which the mean is to be sought, then the passage can be made. Yet even thus it costs, Ulysses will lose six of his companions; the penalty has to be paid, just the penalty of moderation. Es rächt sich alles auf Erden. Two sets of extremes always; if you shun one set and take the middle path, just this act of shunning produces a second set; cut the magnet in twain with its two poles, then each part will at once have two poles of its own. Such is indeed the very dialectic of life, the dualism of existence, which the heroic voyager is to overcome with suffering, with danger, with many penalties.
Fault has often been found with this duplication of the alternative, but when rightly seen into, it will show itself as the central fact of the entire description. It casts an image of the never-ceasing differentiation both in the mind and in the world; it hints the recurring contradiction in all thought and in all conduct, always to be solved, yet never quite solved. What else indeed has man to do? To master the contradiction gives him life, movement, energy, and it must be mastered every day. The old poet is going to the bottom of the matter. The above mentioned repetition of the alternative has its correspondence with the repetition which we have seen to be the fundamental form into which the whole Book is cast.
Plainly the Double Alternative here mythically set forth, springs out of the conflict with the Sirens, and is a deepening of the same to the very bottom. Indulgence kills, abstinence kills, in their excess; and the middle path bifurcates into two new extremes with their problem. Prophetic Circe can tell all this, for does it not lie just in the domain of her experience, which has also been twofold? Pure forms of spirit, wholly non-natural, are these figures representing the Double Alternative, created by the Imagination to express Thought.
3. The final warning of Circe is mainly a repetition of what Tiresias had told Ulysses already in the Underworld; from the latter she heard it and puts it here into its place. Beware of slaying the cattle of the Sun, oxen and sheep in two flocks, over which two bright nymphs keep guard. There can scarcely be a doubt concerning the physical basis of this myth. The seven herds of oxen, fifty to the herd, suggest the number of days in the lunar year (really 354); the seven herds of sheep suggest the corresponding nights. Lampelia (the Moon or Lamp of Night) is the keeper of the one; Phæthusa (the Radiant one) is the keeper of the other—namely the Sun as the day-bringer. Seldom has the old Aryan form of the myth been so well preserved; the whole reads like a transcript out of the Vedas.
Still stronger than the physical side is the spiritual suggestion. The slaughter of these cattle of the Sun points to the supreme act of negation in the intellectual man, to the sin against light. Ulysses and his companions now know the way to reach home, having had the grand experience with the Sirens and then with the Double Alternative; moreover the leader has heard the warning twice. If they now do wrong, it will be a wrong against the Sun, against Intelligence itself.
A certain critic finds fault with Circe because she repeats the warning of Tiresias, and he holds that some botcher or editor, not Homer, transferred the passage from one place to the other. Yet this repetition is not only an organic necessity of the poem, but gives an insight into the character of Circe: she cannot foresee of herself the great intellectual transgression, but Tiresias can; the Sirens and the Double Alternative, however, lie within her own experience. So she copies where she cannot originate, and in this way she is decidedly distinguished from Tiresias, though both are prophetic.