48. Stewart has praised with justice a short but beautiful paragraph concerning poetry (under which title may be comprehended all the various creations of the faculty of imagination) wherein Bacon “has exhausted everything that philosophy and good sense have yet had to offer on the subject of what has since been called the _beau idéal_.” The same eminent writer and ardent admirer of Bacon observes that D’Alembert improved on the Baconian arrangement by classing the fine arts with poetry. Injustice had been done to painting and music, especially the former, when, in the fourth book De Augmentis, they were counted as mere “artes voluptariæ,” subordinate to a sort of Epicurean gratification of the senses, and only somewhat more liberal than cookery or cosmetics. |Natural Theology and Metaphysics.| |Form of bodies.| 49. In the third book, science having been divided into theological and philosophical, and the former, or what regards revealed religion, being postponed for the present, he lays it down that all philosophy relates to God, to nature, or to man. Under natural theology, as a sort of appendix, he reckons the doctrine of angels and superhuman spirits; a more favourite theme, especially as treated independently of revelation, in the ages that preceded Lord Bacon, than it has been since. Natural philosophy is speculative or practical; the former divided into physics, in a particular sense, and metaphysics; “one of which enquireth and handleth the material and efficient causes; the other handleth the formal and final causes.” Hence, physics dealing with particular instances, and regarding only the effects produced, is precarious in its conclusions, and does not reach the stable principles of causation. Limus ut hic durescit, et hæc ut cera liquescit Uno eodemque igni.