Plato and the Other Companions of Sokrates, 3rd ed. Volume 1

But while Anaxagoras held that each of these Homœomeries145 was a special sort of matter with its own properties, and each of them unlike every other: he held farther the peculiar doctrine, that no one of them could have an existence apart from the rest. Everything was mixed with everything: each included in itself all the others: not one of them could be obtained pure and unmixed. This was true of any portion however small. The visible and tangible bodies around us affected our senses, and received their denominations according to that one peculiar matter of which they possessed a decided preponderance and prominence. But each of them included in itself all the other matters, real and inseparable, although latent.146

In the beginning (said Anaxagoras) all things (all sorts of matter) were together, in one mass or mixture. Infinitely numerous and infinite in diversity of magnitude, they were so packed and confounded together that no one could be distinguished from the rest: no definite figure, or colour, or other property, could manifest itself. Nothing was distinguishable except the infinite mass of Air and Æther (Fire), which surrounded the mixed mass and kept it together.147 Thus all things continued for an infinite time in a state of rest and nullity. The fundamental contraries — wet, dry, hot, cold, light, dark, dense, rare, — in their intimate contact neutralised each other.148 Upon this inert mass supervened the agency of Nous or Mind. The characteristic virtue of mind was, that it alone was completely distinct, peculiar, pure in itself, unmixed with anything else: thus marked out from all other things which were indissolubly mingled with each other. Having no communion of nature with other things, it was noway acted upon by them, but was its own master or autocratic, and was of very great force. It was moreover the thinnest and purest of all things; possessing complete knowledge respecting all other things. It was like to itself throughout — the greater manifestations of mind similar to the less.149

But though other things could not act upon mind, mind could act upon them. It first originated movement in the quiescent mass. The movement impressed was that of rotation, which first began on a small scale, then gradually extended itself around, becoming more efficacious as it extended, and still continuing to extend itself around more and more. Through the prodigious velocity of this rotation, a separation was effected of those things which had been hitherto undistinguishably huddled together.150 Dense was detached from rare, cold from hot, dark from light, dry from wet.151 The Homœomeric particles congregated together, each to its like; so that bodies were formed — definite and distinguishable aggregates, possessing such a preponderance of some one ingredient as to bring it into clear manifestation.152 But while the decomposition of the multifarious mass was thus carried far enough to produce distinct bodies, each of them specialised, knowable, and regular — still the separation can never be complete, nor can any one thing be “cut away as with a hatchet” from the rest. Each thing, great or small, must always contain in itself a proportion or trace, latent if not manifest, of everything else.153 Nothing except mind can be thoroughly pure and unmixed.

Nevertheless other things approximate in different degrees to purity, according as they possess a more or less decided preponderance of some few ingredients over the remaining multitude. Thus flesh, bone, and other similar portions of the animal organism, were (according to Anaxagoras) more nearly pure (with one constituent more thoroughly preponderant and all other coexistent natures more thoroughly subordinate and latent) than the four Empedoklean elements, Air, Fire, Earth, &c.; which were compounds wherein many of the numerous ingredients present were equally effective, so that the manifestations were more confused and complicated. In this way the four Empedoklean elements formed a vast seed-magazine, out of which many distinct developments might take place, of ingredients all pre-existing within it. Air and Fire appeared to generate many new products, while flesh and bone did not.154 Amidst all these changes, however, the infinite total mass remained the same, neither increased nor diminished.155

In comparing the theory of Anaxagoras with that of Empedokles, we perceive that both of them denied not only the generation of new matter out of nothing (in which denial all the ancient physical philosophers concurred), but also the transformation of one form of matter into others, which had been affirmed by Thales and others. Both of them laid down as a basis the existence of matter in a variety of primordial forms. They maintained that what others called generation or transformation, was only a combination or separation of these pre-existing materials, in great diversity of ratios. Of such primordial forms of matter Empedokles recognised only four, the so-called Elements; each simple and radically distinct from the others, and capable of existing apart from them, though capable also of being combined with them. Anaxagoras recognised primordial forms of matter in indefinite number, with an infinite or indefinite stock of particles of each; but no one form of matter (except Nous) capable of being entirely severed from the remainder. In the constitution of every individual body in nature, particles of all the different forms were combined; but some one or a few forms were preponderant and manifest, all the others overlaid and latent. Herein consisted the difference between one body and another. The Homœomeric body was one in which a confluence of like particles had taken place so numerous and powerful, as to submerge all the coexistent particles of other sorts.

The majority thus passed for the whole, the various minorities not being allowed to manifest themselves, yet not for that reason ceasing to exist: a type of human society as usually constituted, wherein some one vein of sentiment, ethical, æsthetical, religious, political, &c., acquires such omnipotence as to impose silence on dissentients, who are supposed not to exist because they cannot proclaim themselves without ruin.

The hypothesis of multifarious forms of matter, latent yet still real and recoverable, appears to have been suggested to Anaxagoras mainly by the phenomena of animal nutrition.156 The bread and meat on which we feed nourishes all the different parts of our body — blood, flesh, bones, ligaments, veins, trachea, hair, &c. The nutriment must contain in itself different matters homogeneous with all these tissues and organs; though we cannot see such matters, our reason tells us that they must be there. This physiological divination is interesting from its general approximation towards the results of modern analysis.

Both Empedokles and Anaxagoras begin their constructive process from a state of stagnation and confusion both tantamount to Chaos; which is not so much active discord (as Ovid paints it), as rest and nullity arising from the equilibrium of opposite forces. The chaos is in fact almost a reproduction of the Infinite of Anaximander.157 But Anaxagoras as well as Empedokles enlarged his hypothesis by introducing (what had not occurred or did not seem necessary to Anaximander) a special and separate agency for eliciting positive movement and development out of the negative and stationary Chaos. The Nous or Mind is the Agency selected for this purpose by Anaxagoras: Love and Enmity by Empedokles. Both the one and the other initiate the rotatory cosmical motion; upon which follows as well the partial disgregation of the chaotic mass, as the congregation of like particles of it towards each other.