In existographies, Diogenes of Apollonia (c.460-400BC) (FA:13), named derived from the Milesian colony Apollonia in Thrace, was a Greek philosopher, noted for his air theory of everything, according to which he identified the reason that regulated the world with the original substance, which he considered to be “air”. [1]

Diogenes of Apollonia was labeled an “atheist”, by Irenaeus (130-202AD), per his materialistic account of the world.

Quotes | By
The following are quotes by the Apollonian Diogenes:

“And it seems to me that that which possessed thought is what people call air, and that by this everyone both is governed and has power over everything. For it is this which seems to me to be god and to have reached everything and to arrange everything and to be in everything. And there is not a single thing which does not share in it.”
— Diogenes of Apollonia (c.410BC), On Nature (Ѻ); Frag. B 5. Simplicius, Commentary on the Physics, 152

See also
Diogenes (c.408-323BC) (Cattell 1000:N/A) [RGM:386|1,310+] (PGT:2|Li) (Ѻ) Greek cynic philosopher
Diogenes Laertius (c.190-250AD) (IQ:155|#505) (CR:11) Greco-Roman historian

1. Lange, Friedrich A. (1875). The History of Materialism: and Criticism of its Present Importance, Volume 1: Materialism in Antiquity. The Period of Transition (translator: Ernst Thomas). The Seventeenth Century (translator: Ernest Thomas) (pg. 13). Houghton, Osgood, and Co, 1879.

External links
Diogenes of Apollonia – Wikipedia.

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