Anaximenes of Miletus

"οἷον ἡ ψυχή ἡ ἡμετέρα ἀὴρ οὖσα συγκρατεῖ ἡμᾶς, καὶ ὅλον τὸν κόσμον πνεῦμα καὶ ἀὴρ περιέχει"

"Or as Anaximenes of old believed, let us leave neither the cold nor the hot in the category of substance, but [hold them to be] common attributes of matter which come as the results of its changes. For he declares that the contracted state of matter and the condensed state is cold, whereas what is fine and 'loose' (calling it this way with this very word) is hot. As a result he said that it is not claimed unreasonably that a person releases both hot and cold from his mouth. For the breath becomes cold when compressed and condensed by the lips, and when the mouth is relaxed, the escaping air becomes warm because of rareness."

"He says that the stars do not move under the earth as others have supposed, but around it, as a felt cap turns around our head. The sun is hidden not because it is under the earth but because it is covered by the higher parts of the earth and on account of the greater distance it comes to be from us. Because of their distance the stars do not give heat."

"He [Anaximander] left Anaximenes as his disciple and successor, who attributed all the causes of things to infinite air, and did not deny that there were gods, or pass over them in silence; yet he believed not that air was made by them, but that they arose from air."

"It was not Zeno, the founder of the Stoics, alone, who taught that the Universe evolves, and its primary substance is transformed from the state of fire into that of air, then into that of water, etc. Heraclitus of Ephesus maintained that the one principle that underlies all phenomena in Nature is fire. The intelligence that moves the Universe is fire, and fire is intelligence. And while Anaximenes said the same of air, and Thales of Miletus (600 years b.c.) of water, the Esoteric Doctrine reconciles all these philosophers, by showing that though each was right, the system of none was complete."