[Notes for a Continuation]
(Early Part of 1873)
1
That this total conception of the Anaxagorean doctrine must be right, is proved most clearly by the way in which the successors of Anaxagoras, the Agrigentine Empedocles and the atomic teacher Democritus in their counter-systems actually criticised and improved that doctrine. The method of this critique is more than anything a continued renunciation in that spirit of natural science mentioned above, the law of economy applied to the interpretation of nature. That hypothesis, which explains the existing world with the smallest expenditure of assumptions and means is to have preference: for in such a hypothesis is to be found the least amount of arbitrariness, and in it free play with possibilities is prohibited. Should there be two hypotheses which both explain the world, then a strict test must be applied as to which of the two better satisfies that demand of economy. He who can manage this explanation with the simpler and more known forces, especially the mechanical ones, he who deduces the existing edifice of the world out of the smallest possible number of forces, will always be preferred to him who allows the more complicated and less-known forces, and these moreover in greater number, to carry on a world-creating play. So then we see Empedocles endeavouring to remove the superfluity of hypotheses from the doctrine of Anaxagoras.
The first hypothesis which falls as unnecessary is that of the Anaxagorean Nous, for its assumption is much too complex to explain anything so simple as motion. After all it is only necessary to explain the two kinds of motion: the motion of a body towards another, and the motion away from another.
2
If our present Becoming is a segregating, although not a complete one, then Empedocles asks: what prevents complete segregation? Evidently a force works against it, i.e., a latent motion of attraction.