T.S. Eliot:says

Sometimes the thing I’m trying to say, the subject matter, may be difficult, but it seems to me that I’m saying it in a simpler way….

I think that in the early poems it was a question of not being able to -- of having more to say than one knew how to say, and having something one wanted to put into words and rhythm which one didn’t have the command of words and rhythm to put in a way immediately apprehensible.

That type of obscurity comes when the poet is still at the stage of learning how to use language. You have to say the thing the difficult way. The only alternative is not saying it at all, at that stage.