Each individual's path in life is a unique "work of art." Nevertheless, we each encounter certain universal milestones, from the period of adolescence to old age. Regardless of our backgrounds, we must all pass through critical outer and inner stages.

A bestseller since it was first published, Phases describes the various periods of human life--adolescence, the twenties, the thirties, the forties, and on into old age--looking at the inner qualities and challenges that come with each stage. The author states that conventional physiological and psychological explanations of the...