Of the Kosmos in the last resort, science reports many doubtful things and all of them appalling. There seems no substance to this solid globe on which we stamp: nothing but symbols and ratios. Symbols and ratios carry us and bring us forth and beat us down; gravity that swings the incommensurable suns and worlds through space, is but a figment varying inversely as the squares of distances; and the suns and worlds themselves, imponderable figures of abstraction, NH3, and H2O. Consideration dares not dwell upon this view; that way madness lies; science carries us into zones of speculation, where there is no habitable city for the mind of man. But take the Kosmos with a grosser faith, as our senses give it us. We behold space sown with rotatory islands, suns and worlds and the shards and wrecks of systems: some, like the sun, still blazing; some rotting, like the earth; others, like the moon, stable in desolation. All of these we take to be made of something we call matter: a thing which no analysis can help us to conceive; to whose incredible properties no familiarity can reconcile our minds. This stuff, when not purified by the lustration of fire, rots uncleanly into something we call life; seized through all its atoms with a pediculous malady; swelling in tumours that become independent, sometimes even (by an abhorrent prodigy) locomotory; one splitting into millions, millions cohering into one, as the malady proceeds through varying stages. This vital putrescence of the dust, used as we are to it, yet strikes us with occasional disgust, and the profusion of worms in a piece of ancient turf, or the air of a marsh darkened with insects, will sometimes check our breathing so that we aspire for cleaner places. But none is clean: the moving sand is infected with lice; the pure spring, where it bursts out of the mountain, is a mere issue of worms; even in the hard rock the crystal is forming.