0. Newtonian gravity is your high-school girlfriend. As your first encounter with physics, she’s amazing. You will never forget Newtonian gravity, even if you’re not in touch very much anymore.
1. Electrodynamics is your college girlfriend. Pretty complex, you probably won’t date long enough to really understand her.
2. Special relativity is the girl you meet at the dorm party…
There are nine in total. Worth reading if you enjoy this sort of thing.