This amazing book chronicles sixty plus years of a modern mystic's experience of the subtle worlds of spirit. Taking the attitude of a field biologist David Spangler shares his rich experience and wisdom gleaned from encountering Angels, post-mortem realms, Spiritual Forces, Inner Mentors, Elementals, and other inhabitants of our natural "second ecology". He makes the case that for humanity to be healthy and whole and able to meet the global challenges before us, we need to appreciate and engage these rich and fascinating "energy" environments and the potential allies who live within them. The pages are chock full of interesting stories and anecdotes of the unseen Beings which share our planetary and spiritual life.