Büchner. What is, then, your notion of space?
Reader. Space is the region of [pg 832] all possible ubications and movements. Do you accept this definition?
Büchner. Why not? It is substantially the same as that which I have given by saying that space is the capability of bodies and motion.
Reader. Very well. Then, since I have shown that this capability of bodies and motion is a positive reality, space is a positive reality. Moreover, space is neither matter nor any of the forces of matter, nor dependent on matter, but prior to it, and is prerequired as a necessary condition for the existence of matter. Lastly, space is independent of time and motion, and therefore is absolutely and strictly eternal and unchangeable. Do you object to these conclusions?
Büchner. No, sir.
Reader. Then you concede that space is an infinite, eternal, unchangeable, independent reality, prior to matter and above matter, and therefore, according to your own theory, prior to the world and above it. Now, to concede so much, and then to deny God, would be an evident contradiction. For you must admit that absolute space is either a substance or not. If it is a substance, then it is an infinite, eternal, independent, unchangeable substance, embracing and transcending with its immensity all imaginable worlds; and a substance having such attributes is what we call God. If space is not a substance, it must still have the reason of its reality in a substance from which it borrows its infinity, its eternity, its immutability, and of which it is the extrinsic manifestation. Hence the contemplation of the heavens and of “the immense space interrupted by infinitely distant and scattered groups of worlds” affords an irresistible proof of God's existence, and leaves no room for your pretended “scientific” objections. If there is no God, there is no space; and if there is no space, science is a dream and scientists mere visionaries.[188]
Büchner. I cannot fight on this ground, sir. Space is a mystery which our reason has no power to explain; and I decline to argue about anything that transcends reason. The strongest argument in favor of the existence of a personal God was ever drawn from the necessity of a first mover, in order to account for the movement of the celestial bodies. But such a necessity has never been proved; and therefore “even in this remote position a personal creative power cannot hold its ground” (p. 52).
Reader. You cannot cover your retreat by pretending that space is a mystery; for if space is a mystery, then science also is a mystery—a conclusion which you do not accept. But while you thus implicitly acknowledge your defeat, you try to secure a safer position by alleging that the movement of the heavenly bodies may have originated in the powers of matter itself without any exterior impulse from a first mover. I wish you to remark that the words “first mover” can be understood in two manners; for not he only who directly imparts the first movement, but he also who governs the exertions and establishes the conditions on which the first movements depend, [pg 833] can be called “first mover.” The old philosophers, who did not know the fact of universal gravitation, proved the existence of God by affirming the necessity of a first mover—that is, of a first cause—giving the first impetus to the heavens, and governing their revolutions. But since gravitation became known philosophers have acknowledged that all matter could receive motion through the action of other matter, and therefore that the first movements in the material world could arise from matter itself, with no need of a special impulse from without. This, however, does not mean that we can dispense with a “first mover.” However great your effort to convince yourself that “matter is eternal, and the motion of matter as eternal as matter itself” (p. 53), you will not succeed. Matter is created; and He who created it placed it in definite conditions, that it could exert its powers in a definite manner and give rise to definite effects. To him, therefore, as to a first cause, are to be traced all the movements arising from his production and arrangement of all the proximate causes. Now, the first cause of all movements is a “first mover.” What can science object against this evident truth?
Büchner. “Why matter assumed a definite motion at a definite time is as yet unknown to us; but the investigations of science are as yet incomplete, nor is it impossible that we may get some clue as to the period of the first origin of individual worlds. Even at this day astronomers give cogent reasons that some of the nebular spots are worlds in embryo, which, by gradual condensation and rotation, will become worlds and solar systems. We have, therefore, concluding from analogy, a right to say that those processes through which the existing solar systems have arisen can have formed no exception to the general laws inherent in matter, and that the cause of the first definite motion must have existed in matter itself” (p. 53).
Reader. This is possible; but is it true?