I wasn’t prepared to spend the amount of time with this book that would have been necessary for me to really understand it. I think this is meant to fill a similar niche as Sean Carroll’s (more recent) series *The Biggest Ideas in the Universe* (review), but with much more focus on how to derive various equations from other equations, and much less conceptual discussion. My biggest takeaway is probably just learning some notation:

- the use of a dot over a symbol to indicate a derivative
- the Levi-Civita symbol which, given three indices, is 1, -1, or 0 depending on whether the indices follow a clockwise or counterclockwise order or neither
- the “del” symbol which I had only known as “nabla”
- Poisson brackets

I would have liked for the book to move slower and provide more concrete examples as it went along.