All which I must request you, then, at present, to keep in remembrance, is the _primary_ division, which we have made, of the different states of the mind into two great classes, and the _secondary_ division which we have made of _one_ of these classes, into its two very comprehensive orders.--You will remember, then, that the various affections, of which the mind is susceptible, are either _external_, as they arise from causes without the mind, or _internal_, as they arise from previous states, of the mind itself;--that of these internal affections, some are mere conceptions or notions of former feelings, or of objects and of the qualities or relations of objects, as remembered or variously combined or compared,--results of different susceptibilities of our intellectual constitution, to which different names have been given, conception, memory, imagination, abstraction, reason, and other synonymous terms;--that these internal affections or states of the mind, which I have denominated its intellectual states, are distinctly separable, in our reflective analysis, from certain vivid feelings, that may arise instantly in the mind, on the consideration of these mere intellectual results, or on the perception of objects without,--feelings of admiration, love, desire, and various other analogous, or opposite states of the mind;--but that there is such an order of vivid feelings, which arise, in many cases, on the mere consideration of what we perceive or remember, or imagine, or compare, and that this order is what I wish to be distinguished by the name of _emotions_. According to this division, therefore, of the mental phenomena, into those which are of external and those which are of internal origin, and the subdivision which we have made of this latter class, I shall proceed to consider, first, The external powers or susceptibilities of the mind; 2dly, The intellectual powers or susceptibilities of the mind; and, 3dly, Its susceptibilities of emotion,--beginning with that class, which we have every reason to suppose to be first, in the actual order of developement,--the powers or susceptibilities of the mind, in its immediate relation to its own bodily organs.