This book is a clarion call for an expanded vision of human possibilities. In it, many of the best thinkers of our day ask us to renew the perennial search for self-knowledge and to discover the deeper meaning of our lives.

For this, they offer the transpersonal perspective -- which extends beyond consciousness in its myriad forms, including altered states, yoga, dreams, and contemplation. This marriage of psychology and science with the spiritual traditions has borne ripe fruit: the transpersonal vision, which offers a uniquely generous and encompassing view of human nature.

The...