# System of the Universe explained — The Age of Reason

> Chapter companion for The Age of Reason by Thomas Paine.

## What happens

Paine describes the structure of the solar system, detailing the Sun, six planets, and their motions, and argues for a plurality of worlds, suggesting that fixed stars are other suns with their own systems, filling the immensity of space.

## Themes in this chapter

### Deism and Natural Theology

Paine uses the orderly structure of the solar system to argue for a rational Creator and a universe filled with worlds.

### Science vs. Superstition

Paine presents a scientific, observational account of the cosmos, contrasting with superstitious or mythological explanations.

## Character check-ins

### Thomas Paine

Author and narrator, explaining the solar system and the plurality of worlds.

## Key lines

> The probability, therefore, is that each of those fixed stars is also a Sun, round which another system of worlds or planets, though too remote for us to discover, performs its revolutions, as our system of worlds does round our central Sun.

It is likely that every fixed star is a sun with its own orbiting planets, just like our solar system.

_Paine extends the heliocentric model to the entire universe, arguing for a plurality of worlds._

> By this easy progression of ideas, the immensity of space will appear to us to be filled with systems of worlds; and that no part of space lies at waste, any more than any part of our globe of earth and water is left unoccupied.

This line of reasoning shows that space is filled with many systems of worlds, with no empty or wasted parts.

_Paine emphasizes the purposeful and filled nature of the cosmos, reflecting deist design._

## Links

- HTML: https://www.betterreads.online/discover/the_age_of_reason_se/chapters/part-i-xiv-system-of-the-universe
- Book: https://www.betterreads.online/discover/the_age_of_reason_se
- All chapters: https://www.betterreads.online/discover/the_age_of_reason_se/chapters