Scientific experiments show how a person, under deep hypnosis, can manifest an intelligence that he or she would not normally have. Unlike the assertion of medical science, thoughts are not the by-product of the brain but come from the mind, which is one of the aspects of the Soul. In this lecture, originally delivered in Chicago in 1903, Annie Besant shows that consciousness is larger than the brain and its mechanisms and that we can know such a reality directly by ourselves.