The Republic by Plato Part 2 Page 58

Have you never observed how invincible and unconquerable is spirit and how the presence of it makes the soul of any creature to be absolutely fearless and indomitable?

I have.

Then now we have a clear notion of the bodily qualities which are required in the guardian.

True.

And also of the mental ones; his soul is to be full of spirit?

Yes.

But are not these spirited natures apt to be savage with one another, and with everybody else?

A difficulty by no means easy to overcome, he replied.

Whereas, I said, they ought to be dangerous to their enemies, and gentle to their friends; if