Not so many words at the Preface. However, I'm glad that I have it. Mine is the third edition. As the writer mentions, time doesn't mean anything. It is the passsion. I note it down,"At times it does feel as if the first is true, but I presently subscribe to the idea that given the rapid pace of change in any clinical subject that in order to reflect current practice regular revisions of a text are a fact of life". Love never fails. That's keep us as a dentist and flight for it. The book tells fully explanation to orthodontics with easily understanding words. So, it is not just good to a neophyte. It is also good for a dentist that english is not her/his mother language.