or any other sort of religious professor. Now the example here given was purposely chosen, to make manifest by a familiar example, what everyday experience must teach us, that the principal cause of difference of opinion amongst men is, that people start in argument with some general term, with respect to which they do not know, and have in fact never thought of seriously inquiring, what extent of ground it covers. So that when the inadequate notions with which the minds of untrained persons are possessed have to be replaced by adequate ones, the process always resolves itself into a making of definitions, and a strict scrutiny of some general term, which had hitherto passed current without special interrogation. A teacher therefore, who would be practically useful to mankind, and not merely make brilliant oratorical displays to tickle and to amuse, must before all things make it his business to see that they have clear ideas, not on matters of profound and remote speculation, but on the common currency of general terms which the necessities of social life require. Such a teacher was Socrates; and hence the logical form which his practical teaching by cross-examination, among a people passionately fond of arguing, naturally assumed. A less argumentative people than the Greeks, such as ourselves,--English and Scotch and Irish,--will often look on a Socratic dialogue in Plato, or even Xenophon, {57} as curiously pedantic, which to the Athenians was only amusingly subtle. Even Socrates, the most practical, and, in the sense explained above, the most utilitarian of men, loved to have his little logical play out of the discussion, in a fashion which to a broad practical Briton, unaccustomed to speculation, and impatient, often incapable of grappling with a principle, would appear impertinent. So much for the Socratic hunt after definitions. As to the other point mentioned by Aristotle, that Socrates deserves praise as the inventor of inductive reasoning, there is really no cause for surprise in the matter. Lord Bacon was not the inventor of this method of dealing with facts; neither indeed, if we look beneath the surface, was Socrates; both induction and deduction exist in a state of constant action and reaction in every normally developed human mind; but the praise which belongs to Bacon is that of having pressed the inductive method, with strong adjurations and a special machinery, into the service of physical science; while the praise, no less important, belongs to Socrates, of having taught men four hundred years before Christ, to be as scrupulously exact in testing by experience their moral ideas, as they now are in proving by experiment their physical theories. Let us take a well-known instance of induction in physical science, and then see how, under certain obvious modifications, the same method of procedure must be adopted in the successful cultivation of the moral sciences. We know, for instance, that there exists a marvellous,