Thinkers
ThinkersAtlasTimelineWorks

Thinkers

A story-first philosophy atlas. Explore history's greatest thinkers through place, time, movement, and ideas.

Explore

  • Thinkers
  • Atlas
  • Works

Browse

  • Concepts
  • Volumes

About

  • About Thinkers
  • Image Credits

Volume I · Ancient Greece · 624–262 BCE

Thinkers
ThinkersAtlasTimelineWorks
  1. Home
  2. /Thinkers
  3. /Anaximenes
A

Anaximenes

Pre-SocraticMilesian

Born c. 586 BCE, Miletus

Died c. 526 BCE, Miletus

Everything is air, thickening and thinning. The first attempt to explain change by a single measurable process.

The third of the Milesians took a step his teacher Anaximander would have called a retreat, and yet it was an advance. Anaximenes returned to a definite substance, air, but added the mechanism the others lacked. Air rarefies into fire and condenses into wind, cloud, water, earth, and stone. One stuff, one process, the whole world explained by how tightly it is packed. Breath is the soul, and as breath holds a person together, air holds the cosmos together. It is the first clear case of explaining quality by quantity, the seed of every physics that followed.

Places

Ideas

NatureChange

Words

“Just as our soul, being air, holds us together, so breath and air encompass the whole world.”

— Anaximenes

Works

On Nature

fragmentary
·Greek

Anaximenes' account of how air, by condensing and thinning, becomes wind, cloud, water, earth, and stone. Surviving only in fragments and later reports, it is the first attempt to explain qualitative change through a single measurable process.

Life & Moments

c. 586 BCE

Born in Miletus

Born in Miletus, the third of the great Milesian thinkers and a student of Anaximander.

c. 546 BCE

Air as the First Principle

Argued that one substance, air, becomes all things by condensing and thinning, the first attempt to explain quality through a measurable process.

Influence

Influenced by

  • ←
    Anaximanderteacher and student

    Anaximenes was the pupil of Anaximander and the third of the Milesian thinkers.

Influenced

  • →
    Anaxagorasinfluence

    Anaxagoras inherited the Milesian project of explaining the whole cosmos from a single material starting point.

Related Thinkers

A

Anaxagoras

c. 500 BCE – c. 428 BCE

Anaximander

c. 610 BCE – c. 546 BCE

Read the Journey →Compare with Anaxagoras

Thinkers

A story-first philosophy atlas. Explore history's greatest thinkers through place, time, movement, and ideas.

Explore

  • Thinkers
  • Atlas
  • Works

Browse

  • Concepts
  • Volumes

About

  • About Thinkers
  • Image Credits

Volume I · Ancient Greece · 624–262 BCE