Introduction by Astrid Stavro :

Whether we admit it or not, grids are an essential part of our life. Without grids, our lives would be messier, uglier, and more confusing places to live in. The Art of the Grid products will keep your life in order! Write your shopping lists, practice your layouts, and keep your books and magazines on the shelves of grids that changed the history of design.

http://www.artofthegrid.com/