23. Having already compiled our Historical Memoirs, which, as we conceive, are a valuable addition both to political and moral philosophy, we have now determined to follow it up with the present work, which has been prepared on the same system as the former, and for the same class of readers, but more particularly for those who are in high stations of life. And as our former production contains only the most striking events in the lives of distinguished men, omitting trifling and unimportant incidents; so here it will be proper to dismiss small and doubtful particulars, and merely call attention to great and remarkable transactions, such in fact as are useful, memorable, and entertaining. In the colossal works of the sculptor we do not descend into a minute examination of particulars, but look principally for perfection in the general _ensemble_. This is the only method of criticism applicable to the present work. Its proportions, so to speak, are colossal; it deals in the generalities and main outlines of things, except now and then, when some minor detail can be selected, calculated to be serviceable to the seeker after knowledge, or the man of business. We now think we have demonstrated that our present undertaking is one that requires great care, and is well worthy of a philosopher. CHAPTER II. 1. No one can [justly] blame us for having undertaken to write on a subject already often treated of, unless it appears that we have done nothing more than copy the works of former writers. In our opinion, though they may have perfectly treated some subjects, in others they have still left much to be completed; and we shall be justified in our performance, if we can add to their information even in a trifling degree. At the present moment the conquests of the Romans and Parthians have added much to our knowledge, which (as was well observed by Eratosthenes) had been considerably increased by the expedition of Alexander. This prince laid open to our view the greater part of Asia, and the whole north of Europe as far as the Danube. And the Romans [have discovered to us] the entire west of Europe as far as the river Elbe, which divides Germany, and the country beyond the Ister to the river Dniester. The country beyond this to the Mæotis,[70] and the coasts extending along Colchis,[71] was brought to light by Mithridates, surnamed Eupator, and his generals. To the Parthians we are indebted for a better acquaintance with Hyrcania,[72] Bactriana,[73] and the land of the Scythians[74] lying beyond, of which before we knew but little. Thus we can add much information not supplied by former writers, but this will best be seen when we come to treat on the writers who have preceded us; and this method we shall pursue, not so much in regard to the primitive geographers, as to Eratosthenes and those subsequent to him. As these writers far surpassed the generality in the amount of their