Practice, however, seems to contribute no little to its acquisition; merely breathing the atmosphere of politics would never have made Statesmen of them, and therefore we may conclude that they who would acquire a knowledge of Statesmanship must have in addition practice. But of the Sophists they who profess to teach it are plainly a long way off from doing so: in fact, they have no knowledge at all of its nature and objects; if they had, they would never have put it on the same footing with Rhetoric or even on a lower: neither would they have conceived it to be “an easy matter to legislate by simply collecting such laws as are famous because of course one could select the best,” as though the selection were not a matter of skill, and the judging aright a very great matter, as in Music: for they alone, who have practical knowledge of a thing, can judge the performances rightly or understand with what means and in what way they are accomplished, and what harmonises with what: the unlearned must be content with being able to discover whether the result is good or bad, as in painting. Now laws may be called the performances or tangible results of Political Science; how then can a man acquire from these the faculty of Legislation, or choose the best? we do not see men made physicians by compilations: and yet in these treatises men endeavour to give not only the cases but also how they may be cured, and the proper treatment in each case, dividing the various bodily habits. Well, these are thought to be useful to professional men, but to the unprofessional useless. In like manner it may be that collections of laws and Constitutions would be exceedingly useful to such as are able to speculate on them, and judge what is well, and what ill, and what kind of things fit in with what others: but they who without this qualification should go through such matters cannot have right judgment, unless they have it by instinct, though they may become more intelligent in such matters. Since then those who have preceded us have left uninvestigated the subject of Legislation, it will be better perhaps for us to investigate it ourselves, and, in fact, the whole subject of Polity, that thus what we may call Human Philosophy may be completed as far as in us lies. First then, let us endeavour to get whatever fragments of good there may be in the statements of our predecessors, next, from the Polities we have collected, ascertain what kind of things preserve or destroy Communities, and what, particular Constitutions; and the cause why some are well and others ill managed, for after such enquiry, we shall be the better able to take a concentrated view as to what kind of Constitution is best, what kind of regulations are best for each, and what laws and customs. NOTES BOOK I [1] For this term, as here employed, our language contains no equivalent expression except an inconvenient paraphrase.