I have enjoyed Ambigrams for several years being a lover of Mathematical Recreations, Puzzles of all kinds, Calligraphy, Graphics, etc. Why, I might even be somewhat of an Omni heurist or even an obsessed Metagrobologist. Ambigrams keep cropping up in various puzzle books and by many creators. As mentioned by John Langdon and Scott Kim who published the book “Inversions” a few years ago. Ambigrams are a unique art form, ranging from simple to complex ones. Nevertheless, they are intriguing as they involve great talents, combining art and imagination. There is not too many who can create such art because of the uniqueness. M.C.Escher and Salvador Dali are two artists who have become famous for their imaginative art sometimes called “Optical Illusions”. However if you are captivated by Ambigrams, you are going to love this Wordplay: The Philosophy, Art, and Science of Ambigrams which is an excellent collection of Ambigrams, created by John Langdon. Along with the Ambigrams, there is thoughtful text covering the Philosophy that is connected to this art form. It is not surprising that Ambigrams which bring together Mathematics and Art, people who enjoy both are intrigued by them. The great Mathematical Recreations writer Martin Gardner also loved Ambigrams and it was very appropriate when a poster was created for gatherings of his friends and fans with encompassed Ambigrams. The gathering was called “Martin Gardner’s Celebration of Mind”. The poster has Ambigrams of the words Math, Puzzle, Skeptic, Game and Lewis Carroll. When turned upside down the poster reads “Martin Gardner’s Celebration of Mind”. There is no name ascribed to the artist who created it, only that it is Copyright 2010-Gathering 4 Gardner. The word Math becomes Mind, Puzzle Skeptic becomes Celebration of Game and Lewis Carroll becomes Martin Gardner’s. Langdon also explains how he goes about creating an Ambigram for the word Philosophy that reads the same when inverted. It may be enough to get some started but don’t be surprised if it is much harder than it looks. If you want to delve into this whole thing a bit further, I can suggest “The Perfect Brain” by Scott Kim which I reviewed on February 28, 2012. You can purchase this book at Amazon.