He didn't want or believe that the lower-class Athenians should have access to education. He very much believed in an Oligarchy where the State would be ruled by a select few.
Such a big statement about someone who we know so little about.
But regardless of that, judging from the available works alone that is simply not true. Cases in point: Meno, the slave boy moment; the whole education project from the Republic.
He didn't want or believe that the lower-class Athenians should have access to education. He very much believed in an Oligarchy where the State would be ruled by a select few.