_Thirdly_, there are divisions which are caused entirely by disruption in the Spirit alone; to these alone we are justified in attaching the peculiar interest of contradiction which is bound up with genuine _human activity_. (_α_) Now with reference to the first type of conflicting forces--for the reason that here it is only external Nature, through the maladies and other evils and infirmities which are incidental to her creating, conditions which destroy the pre-existent harmony of life, replacing such with a state of antagonism--such can at most merely serve as a stimulus for something outside them. Regarded wholly by themselves such collisions are of no interest; they are the subject-matter of art simply for the sake of the disruption which may follow as a _consequence_ of some natural misfortune. The "Alcestis" of Euripides, we may add, too, that of Gluck, the subject of whose opera is practically the same, are examples of this; in both the sickness of Admetus is necessarily presupposed. That sickness merely by itself could not fitly supply a subject for artistic treatment. It only becomes, even in the handling of Euripides, associated with it by virtue of the individual characters, who, on account of such misfortune, are compelled to face a further collision. It is the word of the oracle that Admetus must die unless another will pass to the underworld for his sake. Alcestis, out of love for her husband, devotes herself to such a sacrifice, resolves to die, in order to restrain Death from touching her beloved, the father of her children, the king. In the Philoctetes of Sophocles a physical malady is also the cause of the collision. Here the Greeks during their voyage to Troy place the man who is suffering from a wounded foot, caused by the serpent's bite in Chrysas, on the island of Lemnos. In this case, too, the physical mishap is merely the extreme meeting point and incentive of a further collision. For, according to the prophecy, Troy can only fall when the arrows of Hercules are in the hands of the storming army. Philoctetes refuses to give them up because he has been compelled for nine years to suffer the martyrdom of his banishment. This refusal, no less than the fact of his unrighteous desertion from which it springs, could have been followed by every variety of result other than that which took place; the real interest accordingly does not centre in the malady and its physical necessity, but in the opposition which arises from the refusal of Philoctetes to surrender the arrows. The case of the plague in the Greek camp before Troy is very similar; although this is already represented entirely as the consequence of former transgression, as a punishment, in short, a mode of statement more adapted to epic than dramatic poetry, nevertheless it is closely associated with evils incidental to natural misfortune such as storm, shipwreck, and drought. As a rule, however, art will not represent such mischance as mere