The ordinary psychology, admitting fully the difficulty of tracing the marginal outline, has nevertheless taken for granted, first, that all the consciousness the person now has, be the same focal or marginal, inattentive or attentive, is there in the “field” of the moment, all dim and impossible to assign as the latter’s outline may be; and, second, that what is absolutely extra‐marginal is absolutely non‐existent, and cannot be a fact of consciousness at all. And having reached this point, I must now ask you to recall what I said in my last lecture about the subconscious life. I said, as you may recollect, that those who first laid stress upon these phenomena could not know the facts as we now know them. My first duty now is to tell you what I meant by such a statement. I cannot but think that the most important step forward that has occurred in psychology since I have been a student of that science is the discovery, first made in 1886, that, in certain subjects at least, there is not only the consciousness of the ordinary field, with its usual centre and margin, but an addition thereto in the shape of a set of memories, thoughts, and feelings which are extra‐marginal and outside of the primary consciousness altogether, but yet must be classed as conscious facts of some sort, able to reveal their presence by unmistakable signs. I call this the most important step forward because, unlike the other advances which psychology has made, this discovery has revealed to us an entirely unsuspected peculiarity in the constitution of human nature. No other step forward which psychology has made can proffer any such claim as this. In particular this discovery of a consciousness existing beyond the field, or subliminally as Mr. Myers terms it, casts light on many phenomena of religious biography. That is why I have to advert to it now, although it is naturally impossible for me in this place to give you any account of the evidence on which the admission of such a consciousness is based. You will find it set forth in many recent books, Binet’s Alterations of Personality(122) being perhaps as good a one as any to recommend. The human material on which the demonstration has been made has so far been rather limited and, in part at least, eccentric, consisting of unusually suggestible hypnotic subjects, and of hysteric patients. Yet the elementary mechanisms of our life are presumably so uniform that what is shown to be true in a marked degree of some persons is probably true in some degree of all, and may in a few be true in an extraordinarily high degree.