What is an incarnation? From what plane does it take place?
An incarnation is the Divine Consciousness and Being manifesting through the body. It is possible from any plane.
When the Divine descends here as an incarnation, does not that very act mould his infinity into a limited finite? How then does he still continue to rule over the universe?
Do you imagine that the Divine is at any time not everywhere in the universe or beyond it? or that he is living at one point in space and governing the rest from it, as Mussolini governs the Italian Empire from Rome?
I was speaking of the Divine in the body, and not of the Divine in his supreme plane above in an impersonal and formless aspect. Does not his incarnation on earth necessarily limit him? Living in such a world he has to govern all the three universes!
It is the omnipresent cosmic Divine who supports the action of the universe; if there is an Incarnation, it does not in the least diminish the cosmic Presence and the cosmic action in the three or thirty million universes.
When the Avatar comes down here how does he take on a mind, vital and body? It is, I think, the soul that is divine, but the Adhar has to be built up from the cosmos?
Everybody has to do that when he is born. It is the soul that is permanent.
Does an Avatar create a new mind, life and body from the cosmos for himself, or take hold of some liberated human being and use his outer personality for his manifestation?
That would be a possession not an Avatar. An Avatar is supposed to be from birth. Each soul at its birth takes from the cosmic mind, life and matter to shape a new external personality for himself. What prevents the Divine doing the same? What is continued from birth to birth is the inner being.
You wrote: “The Avatar is a special manifestation, while for the rest of the time it is the Divine working with the ordinary human limits as a Vibhuti.” Does not the Divine find it difficult to mould himself into a Vibhuti and accept the human limits?
Why should it be difficult? Even the Avatar accepts limits for his work.
Since an Avatar comes here with a divine Power, Light and Ananda why should he pass through the same process of sadhana as an ordinary sadhak?
The Avatar is not supposed to act in a non-human way — he takes up human action and uses human methods with the human consciousness in front and the Divine behind. If he did not his taking a human body would have no meaning and would be of no use to anybody. He could just as well have stayed above and done things from there.
The Avatar, unlike the Vibhuti, does not need to satisfy his vital. [Sri Aurobindo’s marginal remark: “Why should he not?”] For his vital has no cravings and desires as our vital has. He is above them. And if he seems to be satisfying them, it is only to acquire experience and knowledge of the vital worlds.
All that is wrong. The Avatar takes upon himself the nature of humanity in his instrumental parts, though the consciousness acting behind is divine.
When the Divine descends here (as the Avatar), he has to veil himself and deal with the world and its movements like an ordinary man of the cosmic product [Sri Aurobindo’s marginal remark: “Exactly”]. But behind he is perfectly conscious of what happens. The universal forces cannot make him their tool as they make us.
That does not prevent the Avatar from acting as men act and using the movements of Nature for his life and work.
Does your above answer mean that the Avatars too satisfy the vital desires, cravings, lust etc. as a layman?
What do you mean by lust? Avatars can be married and have children and that is not possible without sex; they can have friendships, enmities, family feelings etc. etc. — these are vital things. I think you are under the impression that an Avatar must be a saint or a yogi.
The Avatars can of course be married and satisfy the vital movements. But do they really indulge them as ordinary people? While satisfying their outer being do they not remain conscious of their union with the Divine above.
There is not necessarily any union above before the practice of yoga. There is a connection of the consciousness with the veiled Divinity and an action out of that, but this is not dependent on the practice of yoga.