The Republic by Plato Part 5 Page 25

The law which we then enacted was agreeable to nature, and therefore not an impossibility or mere aspiration; and the contrary practice, which prevails at present, is in reality a violation of nature.

That appears to be true.

We had to consider, first, whether our proposals were possible, and secondly whether they were the most beneficial?

Yes.

And the possibility has been acknowledged?

Yes.

The very great benefit has next to be established?

Quite so.

You will admit that the same education which makes a man a good guardian will make a woman a good guardian; for their original nature is the same?