The same thing is true with our mystical experience. We cannot, of course, say offhand that here we experience God as one experiences an object of sense, or that we have at last found an infallible and indubitable evidence of the infinite God. My only contention is that here is a form of experience which implies one of two things. Either there is far greater depth and complexity to the inmost nature of personal self-consciousness than we usually take into account, that is, we ourselves are bottomless and inwardly exhaustless in range and scope; _or_ the fragmentary thing we call our self is continuous inwardly with a wider spiritual world with which we have some sort of contact-relationship and from which vitalizing energy comes in to us. It is too soon to decide between these two alternatives. We are only at the very beginning of the study of the submerged life within ourselves, and we must know vastly more about it than we now know before we can draw the boundaries of the soul or declare with certainty what comes from its own deeps and what comes from beyond its farthest margins. The studies of Bergson and still more emphatically the studies of Dr. William McDougall in _Body and Mind_ show very conclusively that the consciousness of _meaning_, the higher forms of memory, the richer and more subtle emotional experiences and the more significant facts of attention, conation, and will cannot be explained in terms of cerebral activities or by any kind of mechanical causation.[26] To arrive at any explanation of the most central activities of personal consciousness we must assume that consciousness is a reality existing in its own sphere and vastly transcending the physical mechanism which it uses. If this is a fact—and McDougall’s argument is the work of one of the most careful and scientifically trained of modern psychologists—then there is no reason why what we call the “soul” might not on occasions receive incomes of life and spiritual energy from the infinite source of consciousness. I can only say that the mystic in his highest moments feels himself to be and believes himself to be in vital fellowship with Another than himself—and what is more, some power to live by does come in from somewhere. Mystical experiences in a large number of instances not only permanently integrate the self but also bring an added and heightened moral and spiritual quality and a greatly increased dynamic effect.