“The dog is a very good one:
you know that well-bred dogs are perfectly gentle to their familiars and
acquaintances, and the reverse to strangers (230).”
Here Socrates states that the Guardians should be gentle
to society and others around them but hostile to the enemy. He makes sense of
the example of the guard dog, and how it is nice to its owner but attacks
unfamiliar people. This connects to White Fang who minded everyone in the
family but when he saw trouble he attacked. This whole idea of the Guardians
being two sided doesn't make a lot of sense. In the beginning of the section he
states that there should be specialization and that each person should focus on
one task and do it well. If the Guardians are both friendly and savage, it will
take away from them in a battle when maybe their friendly side will want to
take over instead of being savage. They would also not be as savage as they
could be since they have made room for softness.