From Chapter VI., Anaxagoras of Klazomenai
131. "All Things Together"s
primary condition of things, before the formation of the worlds, is much the same in both; only, with Anaxagoras, the original mass is no longer the primary substance, but a mixture of innumerable seeds divided into infinitely small parts.
This mass is infinite, like the air of Anaximenes, and it supports itself, since there is nothing surrounding
it.51 Further, the seeds of all things which it contains are infinite in number (fr.1). But, as the innumerable
seeds may be divided into those in which the portions of cold, moist, dense, and dark prevail, and those
which have most of the warm, dry, rare, and light in them, we may say that the original mass was a
mixture of infinite Air and of infinite Fire. The seeds of Air, of course, contain "portions" of the "things"
that predominate in Fire, and vice versa; but we regard everything as being that of which it has most in
it. Lastly, there is no void in this mixture, an addition to the theory made necessary by the arguments of
Parmenides. It is, however, worthy of note that Anaxagoras added an experimental proof of this to the
purely dialectical one of the Eleatics. He used the klepsydya experiment as Empedokles had done (fr.
100), and also showed the corporeal nature of air by means of inflated skins.52
51. Arist. Phys. Γ, 5. 205 b 1 (R. P. 154 a).
52. Phys. Z, 6. 213 a 22 (R. P. 159): We have a full discussion of the experiments with the klepsydya in Probl. 914 b 9 sqq., a passage which we have already used to illustrate Empedokles, fr. 100. See above, p. 219, n. 2.
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