As with external objects, so with human actions; amidst their infinite approximations and affinities, they are separated by circumstances of never-ending diversity. History may furnish her striking correspondences, Biography her splendid parallels, Rome may in certain cases appear but the mirror of Athens, England of Rome,--and yet, after all, no character can be cited, no great transaction, no revolution of 'high-viced cities,' no catastrophe of nations, which, in the midst of its resemblances to distant correspondences in other ages, docs not include features of abundant distinction and individualizing characteristics, so many and so important, as to yield its own peculiar matter for philosophical meditation and its own separate moral. Rare is the case in history, or (to speak with suitable boldness) there is none, which does not involve circumstances capable to a learned eye, without any external aid from chronology, of referring it to its own age. The doctrine of Leibnitz, on the grounds of individuality in the objects of sense, may, in fact, be profitably extended to all the great political actions of mankind. Many pass, in a popular sense, for pure transcripts or duplicates of similar cases in past times; but, accurately speaking, none are such truly and substantially. Neither are the differences, by which they are severally marked and featured, interesting only to the curiosity or to the spirit of minute research. All public acts in the degree in which they are great and comprehensive, are steeped in living feelings, and saturated with the spirit of their own age; and the features of their individuality, that is, the circumstances which chiefly distinguish them from their nearest parallels in other times, and chiefly prevent them from lapsing into blank repetitions of the same identical case, are generally the very cardinal points, the organs, and the depositories which lodge whatever best expresses the temper and tendencies of the age to which they belong. So far are these special points of distinction from being slight or trivial, that in them _par excellence_ is gathered and concentrated, whatever a political philosopher would be best pleased to insulate and to converge within his field of view.