"Where the law is subject to some other authority and has none of its own, the collapse of the state, in my view, is not far off; but if law is the master of the government and the government is its slave, then the situation is full of promise and men enjoy all the blessings that the gods shower on a state."

- Excerpt from The Republic by Plato

According to Plato, what is the best way to guard against a tyranny?