Anaximenes

Type Figure Region Ionia Time c. -586–-526 Also known as Anaximenes of Miletus、Anaximenes

Anaximenes was a philosopher of Miletus in the 6th century BCE, the third major representative of the Milesian school;…

Timeline

c. -586–-550Miletus · MiletusAnaximenes studied under Anaximander at Miletus, continuing the Milesian school's inquiry into the origin of the cosmos and attempting to explain natural change through more concrete physical mechanisms.
c. -550–-526Miletus · MiletusAnaximenes held that air is the origin of all things, taking on different forms—fire, wind, cloud, water, earth—through rarefaction and condensation; his thought explained cosmic order through observable physical change, marking an important development in Milesian natural philosophy.

Anaximenes — Daniel W. Graham (2019) https://plato.stanford.edu/entries/anaximenes/
Anaximenes Of Miletus https://www.britannica.com/biography/Anaximenes-of-Miletus