Sublimity is a word rather like “mystical” in that it is difficult to define exactly what it is, but most of us have had some experience of it. Indeed, when we do experience it, and if we are not emotionally dead, it leaves an indelible impression, for it is an experience, like love, that once we have had, we crave again and again.
However, as with the word “mystical,” we now find in our contemporary society that the concept of sublimity is confined to arcane backwaters—perhaps scholars writing some academic paper may refer to it, but it is certainly not a concept current in popular culture.