[41] As regards another important word illustrated in this chapter, it may be useful to add that the term Analogy is often employed in a wide or rather vague signification; not only by careless writers, but by philosophers. There is an important passage in Bacon's Plan of the Instauratio (prefixed to the Novum Organon) which Wood translates thus:--"The testimony and information of the senses bears always a relation to man, and not to the universe, and it is altogether a great mistake to assert that our senses are the measure of things. The Latin original for "bears a relation" is "est ex analogiâ," but Mr. Ellis prefers rendering it by "has reference to," and confirms his decision by comparing two other Latin phrases;--one, "Materia non est cognoscibilis nisi _ex analogiâ_ formæ"--the other, "Materia non est scibilis nisi _in ordine_ ad formam;--ut dicit" (adds Thomas Aquinas) "Philosophus in primo Physicorum." Mr. Ellis subjoins "That the meaning of the word Analogy was misconceived by S. Thomas, by Duns Scotus, and by the schoolmen in general, is pointed out by Zabarella, _De prim. rerum materiâ_, I. 4." "Philosophus" means Aristotle, who, however, in the passage referred to is faithful to his own correct definition of Analogy, and his instance may readily be stated in four terms, as will appear on reference to the passage (Ed. Bekker 191, a. 8). Argyropylus translates by "similitudine rationis," and St. Hilaire explains "analogia" for the benefit of the general reader by "rapport proportionnel"--(Leçons de Physique I. 8, s. 18). That Bacon was really thus vague in his use of "ex analogiâ" may be gathered from his substitution of "in ordine ad" as an equivalent in the closely related passage, Nov. Org. II. 20. Such being the case with so great a writer, some little allowance may be made for difference of phrase employed by ordinary reasoners on Natural Theology. [42] By way of assisting the young student to a clear perception of what is involved in our Science, we illustrate its ground-work at considerable length in an additional note (marked F) on Teleology. [43] "Die rechte Erkenntniss kann sich erst dann einfinden wenn man weiss wie man erkennt d. h. wenn man seine eigene Natur begriffen hat." Page 5 of "Ueber den Ursprung der Sprache," von W. H. J. Bleek. [44] Macaulay's Essays. Ed. 1852, p. 401. [45] The division of Sciences into ancillary and "architectonic" is Aristotelian. It seems also founded in the nature of things. That real science tends to ground itself, strives after unification with kindred sciences, and, by so doing, rises into philosophy, is a fact visible in every line and letter of Faraday; and the general reader will find it exemplified throughout many fascinating pages of Dr. Tyndall's _Fragments of Science for Unscientific People_, particularly in his articles on Vitality, the use of the Imagination, and the life of Faraday, not to mention his own book on the great inductive philosopher.