THREE:Such were the priori elements which a historical synthesis had prepared to satisfy the want of a metaphysical Absolute. Let us now see what result would follow when the newly-recovered idea of space was subjected to a metaphysical analysis. Extension is both one and infinite. No particular area can be conceived apart from the whole which both contains and explains it. Again, extension is absolutely homogeneous; to whatever distance we may travel in imagination there will still be the same repetition of similar parts. But space, with the Cartesians, meant more than a simple juxtaposition of parts; having been made the essence of matter, it was invested with mechanical as well as with geometrical properties. The bodies into which it resolved itself were conceived as moving, and as communicating their movement to one another through an unbroken chain of causation in which each constituted a single link, determining and determined by the rest; so that, here also, each part was explained by reference to an infinite whole, reproducing its essence, while exempt from the condition of circumscribed existence. We can understand, then, that when the necessity of accounting for extension itself once became felt, the natural solution would be to conceive it as holding the same relation to some greater whole which its own subdivisions held to their sum total; in other words it should be at once a part, an emanation, and an image of the ultimate reality. This is, in fact, very nearly the relation which Matter holds to the One in the Neo-Platonic system. And we know that with Plotinus Matter is almost the same as infinite Extension.Whilst Louis lay ill at Metz, France received an unexpected relief. Prince Charles was hastily recalled to cope with Frederick of Prussia, who had now joined France in the counter-league of Frankfort, and burst into the territories of Maria Theresa. He found in Prague a garrison of fifteen thousand men, yet by the 15th of September he had reduced the place, after a ten days' siege. At the same time Marshal Seckendorf, the Imperial general, entered Bavaria, which was defended only by a small force, and quickly reinstated[88] Charles on the throne of Munich. Vienna itself was in the greatest alarm, lest the enemies uniting should pay it a visit. But this danger was averted by the rapid return of Prince Charles of Lorraine from before Strasburg. He had to pass the very front of the French army; nevertheless, he conducted his forces safely and expeditiously to the frontiers of Bohemia, himself hastening to Vienna to consult on the best plan of operations. Maria Theresa again betook herself to her heroic Hungarians, who, at her appeal, once more rushed to her standard; and Frederick, in his turn alarmed, called loudly on the French for their promises of assistance, but called in vain. The French had no desire for another campaign in the heart of Austria. The Prussian invader, therefore, soon found himself menaced on all sides by Austrians, Croatians, and Hungarian troops, who harassed him day and night, cut off his supplies and his forages, and made him glad to retrace his steps in haste.
