And when we talked about the Persian invasions of Greece, or the Greco-Persian Wars, that was coming to us from someone who is often known as the father of history. I guess that's a very Greco-centric perspective, but that is Herodotus. And now we're going to start getting our accounts from someone who wrote the famous history of the Peloponnesian War, and that is Thucydides. And they're so closely linked, especially because they're giving history of essentially this fifth century BCE, that this is actually a double bust of the two, Herodotus and Thucydides. So once again, a lot of the story that I'm about to tell is coming via Thucydides. So as soon as the Persians, they've been defeated, they leave, you might remember that the Athenians had to escape to Salamis. That's where you also had the naval route of the Persian navy.