This is a tricky book to review...
Leonard Sweet is brilliant. And insufferable. Mostly insufferable. But brilliant a lot too.
He staggers from brilliant to bizarre and back a lot. To the point that I genuinely questioned his mental stability several times while reading.
He's clearly read more books than most people have ever heard of. And doesn't feel bashful about alluding to them. All of them...
He's cute with his words. Which is sometimes clever. More often annoying.
He's Emergent. Or something of that nature. Whatever he is, he makes it clear he doesn't consider himself constrained to mere orthodoxy. He's got a Wesleyan background, but clearly feels free to fly and explore various aspects of spirituality. Presumably, but not necessarily definitely, within a general Christian or Christian-like stream of thought.
Scripture is there a lot I suppose. But I don't think there's any point at which it gets too much in the way of the message Sweet wishes to convey. I got the impression any wisdom literature would have done the trick. But perhaps he's partial to the Christian wisdom literature, etc.
In summary, this book went often from an excellent insight to an unorthodox/illogical/untrue/invalid/absurd statement and back again within a matter of a few sentences. Which suggests that it might be worth your time if you're a strong theologian and critical thinker and need to be stirred up and challenged to think outside the box. However, for most Christians, I think it is dangerous. It should be read with caution. It is definitely Western spirituality. I'm not sure it's particularly Christian. But I'm not sure the author knows that.