Charles Phillips is the author of 30 books, including the best-selling How to Think series, published in 19 languages, and Business Brain Trainer. Charles has investigated Indian theories of intelligence and consciousness in Ancient Civilizations (2005), probed the brain’s dreaming mechanism in My Dream Journal (2003), and examined how we perceive and respond to colour in his Colour for Life (2004). He is also a keen collector of games and puzzles.