---
title: "Meaning & Key Takeaway of: If the motion of the earth were circular…"
description: "\"If the motion of the earth were circular, it would be violent and contrary to nature, and could not be eternal, since nothing violent is eternal . It f..."
image: "https://sms4smile.com/quotes/i/2b8/thomas-aquinas-837_circular-motion_if-the-motion-of-the-earth-were-circular_242255.jpg"
---

#  If the motion of the earth were circular, it would be…

![“If the motion of the earth were circular, it would be violent and contrary to nature, and could not be eternal, since nothing violent is eternal . It follows, therefore, that the earth is not moved with a circular motion.” quote by Thomas Aquinas](https://sms4smile.com/quotes/i/2b8/thomas-aquinas-837_circular-motion_if-the-motion-of-the-earth-were-circular_242255.jpg)   [Download](https://sms4smile.com/quotes/i/2b8/thomas-aquinas-837_circular-motion_if-the-motion-of-the-earth-were-circular_242255.jpg) [Open image](https://sms4smile.com/quotes/i/2b8/thomas-aquinas-837_circular-motion_if-the-motion-of-the-earth-were-circular_242255.jpg)

> “If the motion of the earth were circular, it would be violent and contrary to nature, and could not be eternal, since nothing violent is eternal . It follows, therefore, that the earth is not moved with a circular motion.”

[Thomas Aquinas](https://sms4smile.com/quotes/author/thomas-aquinas/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

The Earth cannot move in a perfect circle because such motion would be violent, and violence cannot be eternal; therefore Earth’s motion is not circular.

**In simple terms:** Circular motion is violent and cannot last forever, so Earth isn’t circular.

Key Takeaway

Accept that natural motion isn’t perfectly circular.

Themes

philosophy physics metaphysics

Mood

thoughtful inquisitive

Type

theoretical philosophical

When to use this quote

- academic debate
- teaching physics
- philosophical discussion
- theological argument

Key Concepts

Aristotelian physics natural motion eternal

Questions to Reflect On

- How do modern physics concepts this view?
- Can motion be both natural and non‑circular?

A Different Perspective

Circular motion may be an oversimplification of complex celestial mechanics.

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[Earth](https://sms4smile.com/quotes/about/earth/) [Eternal](https://sms4smile.com/quotes/about/eternal/) [Nature](https://sms4smile.com/quotes/about/nature/) [Violent](https://sms4smile.com/quotes/about/violent/)

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## More by Thomas Aquinas

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[Explore all 357 Thomas Aquinas quotes ](https://sms4smile.com/quotes/author/thomas-aquinas/)

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> [I see the experience of pictures as a kind of cycle, a kind of circular motion in which you're in the world, then you…](https://sms4smile.com/quotes/frank-gohlke/i-see-the-experience-of-pictures-as-a-kind-of-cycle-a-kind-of/)

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Browse all 9 Circular motion quotes

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