This book is part of a series of books entitled "The Wooden Series" - I presently have 5 of the 30ish books. The full title is Symmetry The Ordering Principal. The books I am interested in pertain to graphic design, so that is the common element. I also have: Islamic Design, A genius for Geometry; The Golden Section, Nature's Greatest Secret; Ruler and Compass (tools of the trade), Practical Geometric Constructions; and Sacred Geometry. My interest is apparent. I have read each of these 5 books, which are generally short (50 pgs +/-) and are packed w/information on the stated topic. Intro to book- Symmetry has a very wide appeal; it is of as much interest to mathematicians as it is to artists & is relevant to physics as it is to architecture. I have been interested in physics & architectural design for years. This book and the others I bought feed my soul's desire for information, of a mathematical nature, in the ways of design & procedure. Don't recall how I first discovered this group of books, but very happy I did.