_Reasons for regarding Consciousness as not a distinct Faculty._--Is this, however, a distinct faculty of the mind? The mind, it is said, is always cognizant of its own operations: when it perceives, it is conscious of perceiving; when it reasons, it is conscious of reasoning; when it feels, it is conscious of feeling; and not to be conscious of any particular mental act, is not to perform that act. To have a sensation, and to be conscious of that sensation, it is said, are not two things, but one and the same, the difference being only in name. A perception is indivisible, cannot be analyzed into a fact, and the consciousness of the fact, for the perception is an act of knowing, and does not take place if it be not known to take place. This is the view taken by Sir William Hamilton, Professor Bowen, and others of high authority. It was maintained by Dr. Brown with much force as an objection to the doctrine of Reid, who had recognized consciousness as a distinct faculty. _Reasons for the opposite View._--On the other hand, the claims of this form of mental activity to be regarded as a faculty of the mind, distinct from and coördinate with the other mental powers, are admitted and maintained by writers of authority, among whom are Dr. Wayland and President Mahan. They maintain that the office of consciousness being to give us knowledge of our own mental states, and this function being quite distinct from that of any other mental faculty, the capacity or power of performing this function deserves to be regarded as itself a faculty of the mind. It is maintained also by Dr. Wayland that consciousness does not necessarily invariably accompany all mental action, but that there may be, and are, acts of which we are not at the time conscious.