1. Plato systematically distinguished between knowledge and mere belief (Meno, Republic, Theaetetus).
3. He argued for enfranchising women politically (admittedly, he didn't argue for their full equality).
5. He offered a conventionalist account of linguistic meaning (Cratylus; admittedly not clear whether he endorses the account).
7. Ironically, he was actually the first European thinker to thematize the very contrast Prof Dawkins mentions here: empiricist/materialist accounts vs antimaterialist accounts (Sophist).