By a natural instinct man feels the want of synthesis; he is not content with mere phenomena. He wants to go further than analysis; he longs to generalize and draw consequences. He wishes to profit by past labor; he wants to know not only results but causes.
Here philosophy must again be called in to judge of and compare facts, to deduce consequences from, and erect systems upon them. If the spiritualist philosophers, quitting abstractions and leaving the solitude of consciousness, have by an enlightened change, which will be serviceable both to truth and to their own cause, begun to dig deeply into the scientific mine which is so rich and productive; on the other hand, the positivists and materialists, forced by the natural inclination of the human mind to draw conclusions and build theories, even after proclaiming the sovereign reign of matter, and after trying to remain in it alone; after attributing to it every property and every function; after making it the absolute foundation of their doctrine and teaching, have here admitted that an inferior supposes a superior order; there accepted final causes; elsewhere invoked the ideal or spoken of truths which are eternal; and in their desire to explain the phenomena of matter or the forms of life, they have been compelled to leave the region of purely material facts and to ascend to those metaphysical ideas which in theory they so strenuously reject.[197]
But although the human mind, placed in presence of problems, goes faster and further than science, yet it cannot do without its aid; it rightly seeks its assistance, and finds in it one of its most solid and safe foundations.
We have, therefore, deemed it interesting to indicate at what point the labors of the physicists have arrived, even by exhibiting their premature solutions. We think it useful to examine some of their conclusions, which have been deduced rather precipitately perhaps, but which, while treating only of bodies, concern more or less directly the sovereign questions of the soul and of the intelligence.
We must say that, in consequence of so many deep researches and fruitful experiments, the empire of the natural sciences has been so vastly extended that nothing in the future seems impossible of attainment, while most unexpected results, intoxicating, as it were, and turning the heads of savants, have seemed to furnish a justification of their defence of even the most rash and surprising theories.
There has been a regeneration of ideas regarding the material world; analysis has probed to its lowest depths and let in the light of day. Men think they have discovered its mode of action and arrived at its very elements.
Two leading theories have been produced, both of which pretend to be based on the most minute verification of details and the most recent facts. If they are not absolutely irreconcilable, they present at least very different formulas.
The one affirms that there is nothing in matter except movement.
The other declares that there is nothing in matter but forces.