You must really get rid of this idea that you are imagining things like the silence and wideness; an experience is not untrue because it is vague. If it is vague at first, it will deepen and intensify afterwards....
Never mind the lower vital, it is not so dreadful as you think, if one can take hold of it by both ends and keep it in its place. It is the same as with the other instruments, body, mind, higher vital, even the overmind powers, — they are good as instruments, but bad as masters.
It is precisely this predominance of the vital in us that makes the necessity of passing through the desert. If the psychic were always there in front, the desert would be no longer a desert and the wilderness would blossom with the rose.
The idea is that, being Omnipotent, omniscient, infinite, supreme, the Divine does not scorn to descend even into the lowest forms, the obscurest figures of Nature and animate them with the divine Presence, — that shows his Divinity.