Can I read On the Heavens online for free?

Yes, you can read the full text of "On the Heavens" by Aristotle for free on Lex. No signup or download required. Just open the book and start reading in your browser, or open it in the iOS or Android app for offline reading.

Is there a free audiobook of On the Heavens?

Yes. "On the Heavens" has a free audiobook available on Lex, synchronized with the full text. You can read along while listening on web, iOS, Android, or desktop — no subscription required.

On the Heavens

Aristotle

On the Heavens

Aristotle

On the Heavens, written by Aristotle in the 4th century BCE, is his principal work on cosmology. In this treatise, Aristotle presents arguments for the spherical nature of the Earth, supported by observations of lunar eclipses, and introduces his theories on gravity, positing that objects containing 'earth' are drawn toward the center of the Universe. He also discusses the ideas of the Pythagoreans and Democritus, exploring the nature of matter and the cosmos. This work is notable for its foundational influence on later astronomical and philosophical thought.

LibriVox

On the Heavens (Greek: Περί ουρανού, Latin: De Caelo or De Caelo et Mundo) is Aristotle's chief cosmological treatise. I...