There is a subject for tragedy there; and it was brilliantly treated in Euripides' Iphigenia in Aulis, which was probably left unfinished at his death. But our play chooses a later moment of the story.
In reality Artemis at the last moment saved Iphigenia, rapt her away from mortal eyes and set her down in the land of the Tauri to be her priestess. (In Tauris is only the Latin for "among the Tauri.") These Tauri possessed an image of Artemis which had fallen from heaven, and kept up a savage rite of sacrificing to it all strangers who were cast on their shores. Iphigenia, obedient to her goddess, and held by "the spell of the altar," had to consecrate the victims as they went in to be slain. So far only barbarian strangers had come: she waited half in horror, half in a rage of revenge, for the day when she should have to sacrifice a Greek. The first Greek that came was her own brother, Orestes, who had been sent by Apollo to take the image of Artemis and bear it to Attica, where it should no more be stained with human sacrifice.
If we try to turn from these myths to the historical facts that underlay them, we may conjecture that there were three goddesses of the common Aegean type, worshipped in different places. At Brauron and elsewhere there was Iphigenia ('Birth-mighty'); at Halae there was the Tauropolos ('the Bull-rider,' like Europa, who rode on the horned Moon); among the savage and scarcely known Tauri there was some goddess to whom shipwrecked strangers were sacrificed. Lastly there came in the Olympian Artemis. Now all these goddesses (except possibly the Taurian, of whom we know little) were associated with the Moon and with child-birth, and with rites for sacrificing or redeeming the first-born. Naturally enough, therefore, they were all gradually absorbed by the prevailing worship of Artemis. Tauropolis became an epithet of Artemis, Iphigenia became her priestess and 'Keybearer.' And the word 'Tauropolis,' which had become obscure, was explained as a reference to the Tauri. The old rude image of Tauropolis had come from the Tauri, and the strange ritual was descended from their bloody rites. So the Taurian goddess must be Artemis too. The tendency of ancient polytheism, when it met with some alien religion, was not to treat the alien gods as entirely new persons, but assuming the real and obvious existence of their own gods, to inquire by what names and with what ritual the strangers worshipped them.
As usual in Euripides, the central character of this play is a woman, and a woman most unsparingly yet lovingly studied. Iphigenia is no mere 'sympathetic heroine.' She is a worthy member of her great but sinister house; a haggard and exiled woman, eating out her heart in two conflicting emotions: intense longing for home and all that she had loved in childhood, and bitter self- pitying rage against 'her murderers.' The altar of Aulis is constantly in her thoughts. She does not know whether to hate her father, but at least she can with a clear conscience hate all the rest of those implicated, Calchas, Odysseus, Menelaus, and most fiercely, though somewhat unjustly, Helen. All the good women in Euripides go wild at the name of Helen. Iphigenia broods on her wrongs till she can see nothing else; she feels as if she hated all Greeks, and lived only for revenge, for the hope of some day slaughtering Greeks at her altar, as pitilessly as they slaughtered her at Aulis. She knows how horrible this state of mind is, but she is now "turned to stone, and has no pity left in her." Then the Greeks come; and even before she knows who they really are, the hard shell of her bitterness slowly yields. Her heart goes out to them; she draws Orestes against his will into talk; she insists on pitying him, insists on his pitying her; and eventually determines, come what may, that she will save at least the one stranger that she has talked with most. Presently comes the discovery who the strangers are; and she is at once ready to die with them or for them.
As for the scene in which Iphigenia befools Thoas, my moral feelings may be obtuse, but I certainly cannot feel the slightest compunction or shock at the heavy lying. Which of us would not expect at least as much from his own sister, if it lay with her to save him from the altars of Benin or Ashanti? I suspect that the good people who lament over "the low standard of truthfulness shown by even the most enlightened pagans" have either forgotten the days when they read stories of adventure, or else have not, in reading this scene, realised properly the strain of hairbreadth peril that lies behind the comedy of it. A single slip in Iphigenia's tissue of desperate improvisations would mean death, and not to herself alone. One feels rather sorry for Thoas, certainly, and he is a very fine fellow in his way; but a person who insists on slaughtering strangers cannot expect those strangers or their friends to treat him with any approach to candour.
The two young men come nearer to mere ideal heroes de roman than any other characters in Euripides. They are surprisingly handsome and brave and unselfish and everything that they should be; and they stand out like heroes against the mob of cowardly little Taurians in the Herdsman's speech. Yet they have none of the unreality that is usual in such figures. The shadow of madness and guilt hanging over Orestes makes a difference. At his first entrance, when danger is still far off, he is a mass of broken nerves; he depends absolutely on Pylades. In the later scenes, when they are face to face with death, the underlying strength of the son of the Great King asserts itself and makes one understand why, for all his madness, Orestes is the chief, and Pylades only the devoted follower.
Romantic plays with happy endings are almost of necessity inferior in artistic value to true tragedies. Not, one would hope, simply because they end happily; happiness in itself is certainly not less beautiful than grief; but because a tragedy in its great moments can generally afford to be sincere, while romantic plays live in an atmosphere of ingenuity and make-believe. The Iphigenia is not of the same order as The Trojan Women. Yet it is a delightful play; subtle, ever-changing, full of movement and poignancy. The recognition scene became to Aristotle a model of what such a scene should be; and the long passage before it, from the entrance of the two princes onward, seems to me one of the most skilful and fascinating in Greek drama.
And after all the adventure of Euripides is not quite like that of the average romantic writer. It is shot through by reflection, by reality and by sadness. There is a shadow that broods over the Iphigenia, though it is not the shadow of death. It is exile, homesickness. Iphigenia, Orestes, the Women of the Chorus, are all exiles, all away from their heart's home, among savage people and cruel gods. They wait on the shore while the sea-birds take wing for Hellas, out beyond the barrier of the Dark-Blue Rocks and the great stretches of magical and 'unfriended' sea. Nearly all the lyrics are full of sea-light and the clash of waters, and the lyrics are usually the very soul of Euripidean tragedy.