Such cases, taken along with others which would be too tedious for quotation, seem sufficiently to prove the existence in our mental machinery of a sense of present reality more diffused and general than that which our special senses yield. For the psychologists the tracing of the organic seat of such a feeling would form a pretty problem—nothing could be more natural than to connect it with the muscular sense, with the feeling that our muscles were innervating themselves for action. Whatsoever thus innervated our activity, or “made our flesh creep,”—our senses are what do so oftenest,—might then appear real and present, even though it were but an abstract idea. But with such vague conjectures we have no concern at present, for our interest lies with the faculty rather than with its organic seat. Like all positive affections of consciousness, the sense of reality has its negative counterpart in the shape of a feeling of unreality by which persons may be haunted, and of which one sometimes hears complaint:— “When I reflect on the fact that I have made my appearance by accident upon a globe itself whirled through space as the sport of the catastrophes of the heavens,” says Madame Ackermann; “when I see myself surrounded by beings as ephemeral and incomprehensible as I am myself, and all excitedly pursuing pure chimeras, I experience a strange feeling of being in a dream. It seems to me as if I have loved and suffered and that erelong I shall die, in a dream. My last word will be, ‘I have been dreaming.’ ”(27) In another lecture we shall see how in morbid melancholy this sense of the unreality of things may become a carking pain, and even lead to suicide. We may now lay it down as certain that in the distinctively religious sphere of experience, many persons (how many we cannot tell) possess the objects of their belief, not in the form of mere conceptions which their intellect accepts as true, but rather in the form of quasi‐sensible realities directly apprehended. As his sense of the real presence of these objects fluctuates, so the believer alternates between warmth and coldness in his faith. Other examples will bring this home to one better than abstract description, so I proceed immediately to cite some. The first example is a negative one, deploring the loss of the sense in question. I have extracted it from an account given me by a scientific man of my acquaintance, of his religious life. It seems to me to show clearly that the feeling of reality may be something more like a sensation than an intellectual operation properly so‐called.