I have repeatedly made use of the analogy between societies and the individuals that compose them. I cannot more clearly express my idea of civilization than by recurring to it again. Civilization, then, is to nations what the development of his physical and intellectual powers is to an individual; indeed, it is nothing but the aggregate result of all these individual powers; a common reservoir to which each contributes a share, whether large or small. The analogy may be extended further. Nations may be considered as themselves members of societies, bearing the same relations to each other and to the whole, as individuals. Thus, all the nations of Europe contribute, each in its own manner and degree, to what has been called the _European_ civilization. And, in the same manner, the nations of Asia form distinct systems of civilizations. But all these systems ultimately tend to one great aim--the general welfare of mankind. I would therefore carefully distinguish between the civilizations of particular nations, of clusters of nations, and of the whole of our species. To borrow a metaphor from the mechanism of the universe, the first are like the planets of a solar system, revolving--though in different orbits, and with different velocities--around the same common centre; but the solar systems again--with all their planets--revolve round another, more distant point. Let us take two individuals of undoubted intellect. One may be a great mathematician, the other a great statesman. Place the first at the head of a cabinet, the second in an observatory, and the mathematician will as signally fail in correctly observing the changes in the political firmament, as the other in noting those in the heavenly. Yet, who would decide which had the superior intellect? This diversity of gifts is not the result of education. No training, however ingenious, could have changed an Arago into a Pitt, or _vice versa_. Raphael could under no circumstances have become a Handel, or either of them a Milton. Nay, men differ in following the same career. Can any one conceive that Michael Angelo could ever have painted Vandyke's pictures, Shakspeare written Milton's verses, Mozart composed Rossini's music, or Jefferson followed Hamilton's policy? Here, then, we have excellencies, perhaps of equal degree, but of very different kinds. Nature, from her inexhaustible store, has not only unequally, but variously, bestowed her favors, and this infinite variety of gifts, as infinite as the variety of faces, God has doubtless designed for the happiness of men, and for their more intimate union, in making them dependent one on another. As each creature sings his Maker's praise in his own voice and cadence, the sparrow in his twitter, the nightingale in her warble, so each human being proclaims the Almighty's glory by the rightful use of his talents, whether great or small, for the promotion of his fellow-creatures' happiness; one may raise pious emotion in the breast by the tuneful