Turning to music and songs often seems to make it easier to unravel ideas about this kind of thing for me.

That's a great guitar.

That's great guitar playing.

That's a great tune.

That's a great song.

That's a great rendering of the song.

That's a great line.

It doesn't need all of those things to make what you listen to memorable.

Writing is communication, and sometimes that primarily means communicating with some kind of vision, and some times it primarily means communicating with a person. There are people so well worth communicating with, and visions so well worth sharing, that you can put up with all kinds of difficulties. And on the other hand, a really clear phone line isn't much use, if the person at the other end hasn't got anything to say that is worth listening to.