This volume provides a comprehensive and accessible introduction to the emerging concept of the evolution of consciousness. The simple, but dynamic, theory of evolving consciousness blends the powerful insights of modern science with the deep wisdom of age-old cultures, synthesising the traditions of East and West, of the head and heart, of the feminine and the masculine and of science and spirituality. By integrating diverse multi-disciplinary approaches, it provides an overarching and transcending model that moves us to a new level of meaning and understanding of our place in the world. An appreciation of the evolution of consciousness can deepen our connection to ourselves, to others and to the natural world, while bringing a new dimension to the work of psychotherapy.