One should not get too impressed with spiritual ideas. That is the whole point of the Critique of Pure Reason. So while the ideas of Rav Nahman are great and important in terms of practical advice, there is a limit to how far any ideas in the spirit realm can be taken as accurate. They can only be accurate in the realm of conditions of possible experience. Outside of that we might have knowledge, but nothing like the religious babble.
The religious world is fraught with talk about spiritual ideas that they know nothing about.
Not that you can know nothing about spiritual reality. But that is immediate non intuitive knowledge that we know, but not through sense nor through reason [to Kelley Ross]. And to Hegel reason can reach even the Absolute. but that is not what religious babble is about.