3. There is a third remark suggested by the view which I have been taking of real assents, viz. that they are of a personal character, each individual having his own, and being known by them. It is otherwise with notions; notional apprehension is in itself an ordinary act of our common nature. All of us have the power of abstraction, and can be taught either to make or to enter into the same abstractions; and thus to co-operate in the establishment of a common measure between mind and mind. And, though for one and all of us to assent to the notions which we thus apprehend in common, is a further step, as requiring the adoption of a common stand-point of principle and judgment, yet this too depends in good measure on certain logical processes of thought, with which we are all familiar, and on facts which we all take for granted. But we cannot make sure, for ourselves or others, of real apprehension and assent, because we have to secure first the images which are their objects, and these are often peculiar and special. They depend on personal experience; and the experience of one man is not the experience of another. Real assent, then, as the experience which it presupposes, is proper to the individual, and, as such, thwarts rather than promotes the intercourse of man with man. It shuts itself up, as it were, in its own home, or at least it is its own witness and its own standard; and, as in the instances above given, it cannot be reckoned on, anticipated, accounted for, inasmuch as it is the accident of this man or that. I call the characteristics of an individual accidents, in spite of the universal reign of law, because they are severally the co-incidents of many laws, and there are no laws as yet discovered of such coincidence. A man who is run over in the street and killed, in one sense suffers according to rule or law; he was crossing, he was short-sighted or preoccupied in mind, or he was looking another way; he was deaf, lame, or flurried; and the cab came up at a great pace. If all this was so, it was by a necessity that he was run over; it would have been a miracle if he had escaped. So far is clear; but what is not clear is how all these various conditions met together in the particular case, how it was that a man, short-sighted, hard of hearing, deficient in presence of mind, happened to get in the way of a cab hurrying along to catch a train. This concrete fact does not come under any law of sudden deaths, but, like the earth’s yearly path which I spoke of above, is the accident of the individual.