If you are looking at this book you should probably buy it. It's one of those books you don't want to read too quickly. Both because it's densely written and because you want to draw out the pleasure of reading it. It's spare but rich in arresting insights - Alvarez's own and many beautifully apposite quotes. The author's voice gives confidence in his complete grasp of his subject from the first sentence and never falters, while remaining unselfimportant and an engaging read. At one point he quotes I. A. Richards on metre, "...it's effect is not due to our perceiving a pattern in something outside us, but to our becoming patterned ourselves." I loved that and the book is packed with stuff like that. He quotes Coleridge on poetry as something which, "contains in itself the reasons why it is so and not otherwise". Virginia Woolf, "Style is a very simple matter; it is all rhythm. Once you get that, you can't use the wrong words". (This is from the start of a fascinating quote from Woolf, which goes deep into her justification for this assertion.) It's a really excellent little book. Buy it and read it, become patterned by it.