godnotgod
Thou art That
One can develop a stillness of mind, sure, but talking about this as "Ultimate Reality" is nonsensical. All we can really discuss is what goes on in our own minds, the rest is pure speculation and mostly nonsense.
No, dear boy: What goes on in your mind is just so much mental popcorn, as someone here once described it. The mind itself is a self-created principle. It is an illusion. Once this is realized, one can make progress toward true Reality. The activities of the mind must undergo complete cessation first. Then there is no more personal 'small world' to be concerned about, is there?
What 'mind' is there that can be stilled? There is no such mind. There is only the stillness itself, and you are it.