Yes Anonymous some did think this was possible but the thing was they did not enforce their ideas, they were pluralistic. They welcomed and benefited from new concepts and ideas from the whole known world of that time and that is why they made progress in science and philosophy. They did not tend to get bogged down in sacred beliefs or absolutist doctrines. With the advantage of hindsight we can see what they could not-- but the ethos was to have open minds and build on what was known to be true.
By contrast the forced suicide of Socrates and the murder of Archimedes by invading Romans is evidence of the permanent cruelty which pervaded the thinking of the holders of power in the classical world.