Christianity as Mystical Fact, and the Mysteries of Antiquity was the title given by the author to this religious study, when, eight years ago, he gathered into it the substance of lectures delivered by him in 1902. The title indicated the special character of the book. In it the attempt was made, not merely to represent historically the mystical content of Christianity, but to describe the origin of Christian history from the standpoint of mystical contemplation. Underlying this intention was the thought that at the genesis of Christianity mystical facts were at work which can only be perceived by such contemplation.