Harold Bloom has a few things to say about everything.
Some of it is so important he'll say it twice in a row.
HB: ...I feel that in that Hamlet book I really let myself go, I allowed myself – if only once – to write for myself, even though I found myself saying things that I know other people have difficulty understanding and which they consider extravagant.
IL: What are some of these things?
HB: Well, for instance, that Hamlet starts to fight back against Shakespeare, that he attempts to rewrite the play that he is in, that he has a kind of authority of consciousnes, that even more than Falstaff he breaks away from Shakespeare. He is so gifted that, to quote Nietzsche, "He does not think too much, he simply thinks too well." He knows too well, he understands too well, he has thought to the end of thought. He has thought himself into an abys that is nothing. Of course, Hamlet moves us, because there are all these hints about transcendence, but to me, it's the darkest literary work I have ever read, its implications are simply shattering.
(via A&L Daily