## Why Beauty is Truth: A History of Symmetry – Ian Stewart

**Thoughts:** I found *Why Beauty is Truth* not to be nearly as interesting as the other book of Stewart’s I’ve read, *Visions of Infinity*. After the first chapter or two, I skimmed until the middle of the book, then read to the end. Upon finishing it, I had a bit of a better idea what symmetry is, what various mathematical concepts like quaternions are, etc.

(The notes below are not a summary of the book, but rather raw notes - whatever I thought, at the time, might be worth remembering.)

Stewart, Ian. 2007. *Why Beauty is Truth: A History of Symmetry*. Basic Books.

- 24: “Mathematics does not assert that some statement is
*true*: it asserts that if we make various assumptions, then the statement concerned must be a logical consequence.”

Posted: Nov 30, 2022. Last updated: Aug 31, 2023.