Is there another world beyond this physical reality? The author, Rudolf Steiner, says there is. This book describes what it is like to stand at the threshold of the spiritual world and begin experiencing it in deeper ways. We seem to know it is there and some of us have experienced glimpses of it. Steiner reveals how these glimpses come about and what we can do to hold onto them longer. He shows us that there really is a threshold into the spiritual world and how it can be crossed if we know what to do.