In this book, the author endeavored to suggest the meaning and value of mysticism for his day. His conviction that mysticism is essentially a spirit and not a system, or even a method, has precluded anything like a detailed application of mystical principles to the movements of the day. At all points Mr. Herman tried to show how the mystical element may be brought to bear upon the Christian thought and life of the day, and to suggest where its dynamic and transmuting power can go to shape the Christian thought and life of tomorrow.