"The Fourth Instinct is a wonderful discovery, reminding each of us of all that we were meant to be--and can still become. Caring, sensitive, profoundly insightful, it is a book that can change the way we live our lives."
--Deepak Chopra, M.D., author, Ageless Body, Timeless Mind and Quantum Healing

"Arianna Huffington, in the course of her life, has come to experience the world with unusual depth. In her inspiring new book, which follows her younger work, After Reason, she has brought forth her perception of The Fourth Instinct: The Call of the Soul to reveal the insight of a sensitive and evolving mind. "
--Jonas Salk, M.D., author, The Anatomy of Reality and Survival of the Wisest

"Arianna Huffington has written a brilliant book about the search for deeper meaning and personal fulfillment in our lives. When we neglect that impulse, she explains, we become increasingly susceptible to depression, aggression, and various addictions. The Fourth Instinct is a groundbreaking and fascinating book. "
--Dean Ornish, M.D., author, Stress, Diet, and Your Heart and Dr. Dean Ornish’s Program for Reversing Heart Disease