Hi, I'm doing further maths and I would like to study maths at university. I have been asked to read a number of books to put on my personal statement, and as I am finding it difficult coming to terms with the fact that mechanics is taught as maths and not physics, a maths don at Oxford suggested that I should look into the principle of least action, apparently what all mechanics is based on (I'm sure that it's fairly obvious that I know nothing about this, so forgive me if I'm wrong). I was wondering if anyone knew of a readable book that explains the concept and the history surrounding it that I could read. Thanks!!