Poetic Meter and Poetic Form

I'd like to recommend the book Poetic Meter and Poetic Form. This should not be your first book on poetry; it's for the person who already knows that the Petrarchan sonnet differs from the Shakespearian one, but doesn't quite see why it matters. The book was written in a modern age, but with a traditionalist spirit. Some quotes:

The art of poetry is the art of knowing language and people equally well. To do something to the reader is the end of poetry; a poem is less a notation on a page or a sequence of uttered sounds than a shaped and measured formal effect that impinges upon a reader or hearer.

The approximation of structures of reasoning to the shape of the rhyme scheme is one of the most difficult acts in English poetry: indeed, only a few masters of the sonnet in English have managed always to avoid meaningless rhyming.

The notion that convention shows a lack of feeling, and that a poet attains “sincerity” by disregarding convention, is opposed to all the facts of literary experience and history. The individual talent is speechless without the conventions. And without an almost equal understanding of them, the audience, for all its intelligence and good will, hears nothing. “The innocent eye sees nothing.”

And it includes good lessons for the prose writer as well

 A principle governing all events which occur in time is that the middle of the event is the least interesting part, the beginning the next more interesting, and the end the most interesting. Instead of “He is a fool, in my opinion,” say, “He is, in my opinion, a fool.”