Kenneth Earl Wilber II (born January 31, 1949) is an American author who has written about mysticism, philosophy, ecology, and developmental psychology. His work formulates what he calls Integral Theory. In 1998, he founded the Integral Institute, for teaching and applications of Integral Theory. Wilber gave The Philosopher's Commentary to the Matrix trilogy with Cornel West for the Ultimate Matrix Collection, and interviewed Lana Wachowski in The Many Meanings of The Matrix.