Beautifully illustrated with many old engravings as well as contemporary imagery, "Sacred Number" covers basic counting systems and the widespread use of 20 important numbers from major religious texts; the importance of astronomy, geometry, and music to number quality; and how numbers affect archit[...]

Visual Rhythms of the Ancient Mind. How do you draw Celtic knotwork? Are there tricks for drawing Celtic spirals? In this pocket book, author and artist Adam Tetlow shows us the practical tricks of the trade and the hidden principles behind the ancient magical science of Celtic artwork. With example[...]