William Douglas Horden is a gifted diviner who works with the I Ching and Pre-Hispanic MesoAmerican tools. He studied intensively with I Ching Master Khigh Alx Dhiegh and with Tarahumara shamans in Mexico's Copper Canyon. He is the author of numerous books and articles on divination and spirituality, co-author of The Toltec I Ching, a blogger for The Huffington Post and other online publications, and has been a guest on a variety of radio programs. He lives in Roseburg, Oregon and Coatepec, Mexico, and travels frequently.