Nirvana and ego
What then is Nirvana?
In orthodox Buddhism it does mean a disintegration, not of the soul – for that does not exist – but of a mental compound or stream of associations or saṃskāras which we mistake for ourself.
In illusionist Vedanta it means, not a disintegration but a disappearance of a false and unreal individual self into the one real Self or Brahman; it is the idea and experience of individuality that so disappears and ceases, – we may say a false light that is extinguished (nirvāṇa) in the true Light. In spiritual experience it is sometimes the loss of all sense of individuality in a boundless cosmic consciousness; what was the individual remains only as a centre or a channel for the flow of a cosmic consciousness and a cosmic force and action. Or it may be the experience of the loss of individuality in a transcendent being and consciousness in which the sense of cosmos as well as the individual disappears. Or again, it may be in a transcendence which is aware of and supports the cosmic action.
But what do we mean by the individual? What we usually call by that name is a natural ego, a device of Nature which holds together her action in the mind and body. This ego has to be extinguished, otherwise there is no complete liberation possible; but the individual self or soul is not this ego.
The individual soul is the spiritual being which is sometimes described as an eternal portion of the Divine, but can also be described as the Divine himself supporting his manifestation as the Many. This is the true spiritual individual which appears in its complete truth when we get rid of the ego and our false separative sense of individuality, realise our oneness with the transcendent and cosmic Divine and with all beings. It is this which makes possible the Divine Life.
Nirvana is a step towards it; the disappearance of the false separative individuality is a necessary condition for our realising and living in our true eternal being, living divinely in the Divine. But this we can do in the world and in life.