He pictures to himself the universe as originally an infinite expansion of minutely subdivided matter, and supposing a single centre of attraction to be somewhere therein set up, he endeavours to show that the result must be a prodigious central body surrounded by systems of solar and planetary worlds in all stages of development. 'In vivid language,' says Professor Huxley,[43] 'he describes the great world-maelstrom widening the margin of its prodigious eddy in the slow progress of millions of ages, gradually reclaiming more and more of the molecular waste, and converting chaos into cosmos.' Then, fixing his attention more particularly on our own system, he accounts for the relation between the masses and densities of the planets and their distances from the sun, for the eccentricity of their orbits, for their rotation, for their satellites, for the general agreement in the direction of rotation among the celestial bodies, for Saturn's ring, and for the zodiacal light. All this he does, according to Professor Huxley, by 'strict deduction from admitted dynamical principles,' and I, well aware of my own inability to form an independent judgment on the point, gladly take so high an authority's word for it. For aught that I know, Kant's attractive and repulsive forces being admitted, the establishment of centres of attraction, and of circle within circle of revolutions round them, and all his other details, would follow naturally and of course. I limit myself to asking, Whence these simple forces?--and when Kant replies, 'From the Eternal Thought of the Divine Understanding,' I should be the last to criticise if his answer stopped there. Unfortunately, he adds that the forces were 'evolved without purpose'; in other words, that the Intelligence which thought them into existence failed to think of any purpose for them. 'Matter,' he proceeds, 'is purely _passive_, yet, nevertheless, has in its simplest state a _determination_ towards the assumption of a more perfect constitution in the way of natural development, whereby it _breaks up_ rest, _stirs_ up nature, gives to chaos shape.' For the elements whereof this passively stirring up matter is composed 'have native powers of setting each other in motion, and are to themselves a spring of life;' and when, having of course being previously dead, they have given themselves life, they forthwith begin to attract each other with a strength varying with their varying degrees of specific gravity. The scattered elements of the denser sort collect by attraction all particles of less specific gravity out of their immediate neighbourhood, and are themselves similarly collected by particles of still denser sort, these again by others denser yet, and so on, until, as results of this particular action, several masses are formed which in like manner would converge towards and be united with the largest and densest of their number, were it not that the counter principle of repulsion now comes into play. This