ideas, but as the most particular object, or qualities, as well as the most general combinations and classes of things are necessarily confused and mixed results, and nothing more than a number of impressions, never distinctly analyzed by the mind, there can be no general reasoning to disprove abstracted ideas in the common sense of the word. ON THE WRITINGS OF HOBBES In the following Essays I shall attempt to give some account of the rise and progress of modern metaphysics, to state the opinions of the principal writers who have treated on the subject, from the time of Lord Bacon to the present day, and to examine the arguments by which they are supported. In the first place, it will be my object to shew what the real conclusions of the most celebrated authors were, and the steps by which they arrived at them: to trace the connexion or point out the difference between their several systems, as well as to inquire into the peculiar bias and turn of their minds, and in what their true strength or weakness lay. This will undoubtedly be best done by an immediate reference to their works whenever the nature of the subject admits of it, or whenever their mode of reasoning is not so loose and desultory as to render the quotation of particular passages a useless as well as endless labour. In the History of English Philosophy, of which I published a prospectus some time ago, I intended to have gone regularly through with all the writers of any considerable note who fell within the limits of my plan, and to have given a detailed analysis of their several subjects and arguments. But this would lead to much greater length and minuteness of inquiry than seems consistent with my present object, and would besides, I am afraid, prove (what Hobbes, speaking of these subjects in general, calls) ‘but dry discourse.’ To avoid this as much as possible, I shall pass over all those writers who have not been distinguished either by the boldness of their opinions, or the logical precision of their arguments. Indeed I shall confine my attention more particularly to those who have made themselves conspicuous by deviating from the beaten track, and who have struck out some original discovery or brilliant paradox; whose metaphysical systems trench the closest on morality, or whose speculations, by the interest as well as novelty attached to them, have become topics of general conversation.