Further: in order to explain that Chaos, a force must already have been at work; a movement is necessary to bring about this complicated entanglement.
Therefore periodical preponderance of the one and the other force is certain. They are opposites.
The force of attraction is still at work; for otherwise there would be no Things at all, everything would be segregated.
This is the actual fact: two kinds of motion. The Nous does not explain them. On the contrary, Love and Hatred; indeed we certainly see that these move as well as that the Nous moves.
Now the conception of the primal state undergoes a change: it is the most blessed. With Anaxagoras it was the chaos before the architectural work, the heap of stones as it were upon the building site.
3
Empedocles had conceived the thought of a tangential force originated by revolution and working against gravity ("de coelo," i., p. 284), Schopenhauer, "W. A. W.," ii. 390.
He considered the continuation of the circular movement according to Anaxagoras impossible. It would result in a whirl, i.e., the contrary of ordered motion.
If the particles were infinitely mixed, pell-mell, then one would be able to break asunder the bodies without any exertion of power, they would not cohere or hold together, they would be as dust.
The forces, which press the atoms against one another, and which give stability to the mass, Empedocles calls "Love." It is a molecular force, a constitutive force of the bodies.