All wise statesmen have agreed to consider the prosperity or adversity of nations as made up of the happiness or misery of individuals, and to reject as chimerical all notions of a public interest of the community, distinct from the interest of the component parts. It is therefore strange that those whose office it is to supply statesmen with examples and warnings should omit, as too mean for the dignity of history, circumstances which exert the most extensive influence on the state of society. In general, the under current of human life flows steadily on, unruffled by the storms which agitate the surface. The happiness of the many commonly depends on causes independent of victories or defeats, of revolutions or restorations,--causes which can be regulated by no laws, and which are recorded in no archives. These causes are the things which it is of main importance to us to know, not how the Lacedaemonian phalanx was broken at Leuctra,--not whether Alexander died of poison or by disease. History, without these, is a shell without a kernel; and such is almost all the history which is extant in the world. Paltry skirmishes and plots are reported with absurd and useless minuteness; but improvements the most essential to the comfort of human life extend themselves over the world, and introduce themselves into every cottage, before any annalist can condescend, from the dignity of writing about generals and ambassadors, to take the least notice of them. Thus the progress of the most salutary inventions and discoveries is buried in impenetrable mystery; mankind are deprived of a most useful species of knowledge, and their benefactors of their honest fame. In the meantime every child knows by heart the dates and adventures of a long line of barbarian kings. The history of nations, in the sense in which I use the word, is often best studied in works not professedly historical. Thucydides, as far as he goes, is an excellent writer; yet he affords us far less knowledge of the most important particulars relating to Athens than Plato or Aristophanes. The little treatise of Xenophon on Domestic Economy contains more historical information than all the seven books of his Hellenics. The same may be said of the Satires of Horace, of the Letters of Cicero, of the novels of Le Sage, of the memoirs of Marmontel. Many others might be mentioned; but these sufficiently illustrate my meaning.