Better as a Book...
Honestly, this transferred poorly to the screen.
As a book, it's excellent, even if the mythology references and dialogue is more than a bit over the top.
The stage play did excellent justice to the book, if only because it inherently involves the audience in the character's actions and surroundings. Theater is indeed the proper medium for this work.
But the TV series....
It drags utterly. And all the mythological aspects come across as ridiculous. The lack of the audience also changes how we perceive the dialogue, where goes from inclusive in the theater, to preachy/overblown and hackneyed when that audience is removed.
I can honestly say: read the book, then see it in a theatrical production, even if you have the shorter version which roughly corresponds to the miniseries. It's simply not the same as a mini-series; in fact, it comes off as ludicrous rather than profound.
Sometimes, things belong in a specific medium. This is one of them.