The Republic by Plato Part 5 Page 23

That will never do.

One woman has a gift of healing, another not; one is a musician, and another has no music in her nature?

Very true.

And one woman has a turn for gymnastic and military exercises, and another is unwarlike and hates gymnastics?

Certainly.

And one woman is a philosopher, and another is an enemy of philosophy; one has spirit, and another is without spirit?

That is also true.

Then one woman will have the temper of a guardian, and another not. Was not the selection of the male guardians determined by differences of this sort?

Yes.