Of course, as these two are not inconsistent with each other, they may co-exist in the same mind. Indeed there is no one who does not to a certain extent exercise both the one and the other. Viewed in relation to Assent, which has led to my speaking of them, they do not in any way affect the nature of the mental act, which is in all cases absolute and unconditional; but they give it an external character corresponding respectively to their own: so much so, that at first sight it might seem as if Assent admitted of degrees, on account of the variation of vividness in these different apprehensions. As notions come of abstractions, so images come of experiences; the more fully the mind is occupied by an experience, the keener will be its assent to it, if it assents, and on the other hand, the duller will be its assent and the less operative, the more it is engaged with an abstraction; and thus a scale of assents is conceivable, either in the instance of one mind upon different subjects, or of many minds upon one subject, varying from an assent which looks like mere inference up to a belief both intense and practical,—from the acceptance which we accord to some accidental news of the day to the supernatural dogmatic faith of the Christian. It follows to treat of Assent under this double aspect of its subject-matter,—assent to notions, and assent to things. Chapter IV. Notional And Real Assent. 1. I have said that our apprehension of a proposition varies in strength, and that it is stronger when it is concerned with a proposition expressive to us of things than when concerned with a proposition expressive of notions; and I have given this reason for it, viz. that what is concrete exerts a force and makes an impression on the mind which nothing abstract can rival. That is, I have argued that, because the object is more powerful, therefore so is the apprehension of it. I do not think it unfair reasoning thus to take the apprehension for its object. The mind is ever stimulated in proportion to the cause stimulating it. Sights, for instance, sway us, as scents do not; whether this be owing to a greater power in the thing seen, or to a greater receptivity and expansiveness in the sense of seeing, is a superfluous question. The strong object would make the apprehension strong. Our sense of seeing is able to open to its object, as our sense of smell cannot open to its own. Its objects are able to awaken the mind, take possession of it, inspire it, act through it, with an energy and variousness which is not found in the case of scents and their apprehension. Since we cannot draw the line between the object and the act, I am at liberty to say, as I have said, that, as is the thing apprehended, so is the apprehension.