I agree that each of us experiences the world through our own unique filter, for want of a better word. We're lucky when we happen upon someone who seems to be able to relate to us in some meaningful way, or who at least appreciates our differences. But ultimately, it would seem that we are alone. But are we? No one can say for sure.

I think I follow you. Yes, we are alone. Sort of.

The book “Rethinking Madness” discusses man’s struggle to maintain balance between loneliness and engulfment by the all. There’s supposedly a middle way there somewhere.

Some of my finest memories are times of being and feeling very alone, but yet having warm moments of casual connection—just humans sticking together and supporting each other.

Suppose that we do fall out of our egos and join that great oneness. if we are one with that oneness and that oneness is truly one, then we’ll still be alone, wouldn’t you say?

Yes, in the end, you Are alone...always. once you accept this & stop thinking of it as scary, or "bad", you will find deep peace and new appreciation for yourself & your abilities, plus form relationships based on a far firmer footing than "need".

We'll die as we were born and as we lived ... alone. My wife and I have had this convo many times. It is not (or doesn't have to be) a sorrowful realization. It is just the way it is. And acknowledging and accepting that actually gets away from any negative feelings about it.

There are limitations on what we can convey via various verbal and nonverbal methods of communication. Understanding this allows us to not put too much stake in it, but at the same time, it doesn't mean that we can't know and be known to a significant degree, and likely, for most of us most of the time, sufficient to feel a sense of community and belonging that gets us through our days.

If there is a sense of being alone that does not lend itself to some kind of explanation in words then I do wonder if it is any different from so-called mystical experiences? I have heard it said that language is largely referential, that is, fundamentally about the world and cannot be or contain that which it describes.

Count Korzybski said that the real world is unspeakable that may be construed as a double entendre....LOL