this secret contrariety of creative forces which produced the literary incompleteness, the licentious plays, the abortive drama of Dryden and Wycherly, the poor Greek importations, the gropings, the minute beauties and fragments of Ronsard and the Pleiad. We may confidently affirm that the unknown creations toward which the current of coming ages is bearing us will spring from and be governed by these primordial forces; that, if these forces could be measured and computed we might deduce from them, as from a formula, the characters of future civilization; and that if, notwithstanding the evident rudeness of our notations, and the fundamental inexactitude of our measures, we would nowadays form some idea of our general destinies, we must base our conjectures on an examination of these forces. For, in enumerating them, we run through the full circle of active forces; and when the race, the environment, and the moment have been considered--that is to say the inner mainspring, the pressure from without, and the impulsion already acquired--we have exhausted not only all real causes but again all possible causes of movement. VI. History is a mechanical and psychological problem. Within certain limits man can foretell There remains to be ascertained in what way these causes, applied to a nation or to a century, distribute their effects. Like a spring issuing from an elevated spot and diffusing its waters, according to the height, from ledge to ledge, until it finally reaches the low ground, so does the tendency of mind or of soul in a people, due to race, epoch, or environment, diffuse itself in different proportions, and by regular descent, over the different series of facts which compose its civilization.[3] In preparing the geographical map of a country, starting at its watershed, we see the slopes, just below this common point, dividing themselves into five or six principal basins, and then each of the latter into several others, and so on until the whole country, with its thousands of inequalities of surface, is included in the ramifications of this network. In like manner, in preparing the psychological map of the events and sentiments belonging to a certain human civilization, we find at the start five or six well determined provinces--religion, art, philosophy, the state, the family, and industries; next, in each of these provinces, natural departments, and then finally, in each of these departments, still smaller territories until we arrive at those countless details of life which we observe daily in ourselves and around us. If, again, we examine and compare together these various groups of facts we at once find that they are composed of parts and that all have parts in common. Let us take first the three principal products of human intelligence--religion, art, and philosophy. What is a philosophy but a conception of nature and of its [primordial causes] under the form of abstractions and formulas? What