The West teaches this stuff, too. As with all doctrines of the Church, there are many different directions from which to come at this stuff. But here’s an Eastern take from the early centuries of the Church.
St. Gregory of Nyssa recounts that his eldest sister, St. Macrina (whom he fondly calls “the Teacher”) taught this among other things on her deathbed, about Purgatory et al:
"If, then, on the one hand, the soul is unencumbered with superfluities and no trouble connected with the body presses it down, its advance towards Him Who draws it to Himself is sweet and congenial.
"But suppose, on the other hand, that it has been transfixed with the nails of propensity, so as to be held down to a habit connected with material things,—a case like that of those in the ruins caused by earthquakes, whose bodies are crushed by the mounds of rubbish – and let us imagine by way of illustration that these are not only pressed down by the weight of the ruins, but have been pierced as well with some spikes and splinters discovered with them in the rubbish. What then, would naturally be the plight of those bodies, when they were being dragged by relatives from the ruins to receive the holy rites of burial – mangled and torn entirely, disfigured in the most direful manner conceivable, with the nails beneath the heap harrowing them by the very violence necessary to pull them out?—Such I think is the plight of the soul as well when the Divine force, for God’s very love of man, drags that which belongs to Him from the ruins of the irrational and material.
"Not in hatred or revenge for a wicked life, to my thinking, does God bring upon sinners those painful dispensations; He is only claiming and drawing to Himself whatever, to please Him, came into existence. But while He for a noble end is attracting the soul to Himself, the Fountain of all Blessedness, it is the occasion necessarily to the being so attracted of a state of torture. Just as those who refine gold from the dross which it contains, not only get this base alloy to melt in the fire, but are obliged to melt the pure gold along with the alloy, and then while this last is being consumed the gold remains, so, while evil is being consumed in the purgatorial fire, the soul that is welded to this evil must inevitably be in the fire too, until the spurious material alloy is consumed and annihilated by this fire.
“If a clay of the more tenacious kind is deeply plastered round a rope, and then the end of the rope is put through a narrow hole, and then someone on the further side violently pulls it by that end, the result must be that, while the rope itself obeys the force exerted, the clay that has been plastered upon it is scraped off it with this violent pulling and is left outside the hole; and, moreover, is the cause why the rope does not run easily through the passage, but has to undergo a violent tension at the hands of the puller. In such a manner, I think, we may figure to ourselves the agonized struggle of that soul which has wrapped itself up in earthy material passions, when God is drawing it, His own one, to Himself, and the foreign matter, which has somehow grown into its substance, has to be scraped from it by main force, and so occasions it that keen intolerable anguish.”
“Then it seems,” I said, “that it is not punishment chiefly and principally that the Deity, as Judge, afflicts sinners with; but He operates, as your argument has shown, only to get the good separated from the evil and to attract it into the communion of blessedness.”
“That,” said the Teacher, "is my meaning; and also that the agony will be measured by the amount of evil there is in each individual. For it would not be reasonable to think that the man who has remained so long as we have supposed in evil known to be forbidden, and the man who has fallen only into moderate sins, should be tortured to the same amount in the judgment upon their vicious habit; but according to the quantity of material will be the longer or shorter time that that agonizing flame will be burning; that is, as long as there is fuel to feed it. In the case of the man who has acquired a heavy weight of material, the consuming fire must necessarily be very searching; but where that which the fire has to feed upon has spread less far, there the penetrating fierceness of the punishment is mitigated – so far as the subject itself, in the amount of its evil, is diminished.
“In any and every case evil must be removed out of existence, so that, as we said above, the absolutely non-existent should cease to be at all. Since it is not in its nature that evil should exist outside the will, does it not follow that when it shall be that every will rests in God, evil will be reduced to complete annihilation, owing to no receptacle being left for it?”
All this and much more, including automatons, is covered in the dialogue “On the Soul and the Resurrection”.
