False language, evil in itself, infects the soul with evil.

The alphabet will create forgetfulness in the learners' souls. They will trust the written characters and not remember themselves.

One who is injured ought not to return the injury, for on no account can it be right to do an injustice.

Our purpose in founding the city was not to make any one class in it surpassingly happy, but to make the city as a whole as happyas possible.

I do nothing but go about persuading you all, old and young alike, not to take thought for your persons or your properties, but and chiefly to care about the greatest improvement of the soul.

It is the greatest good for an individual to discuss virtue (aka areté) every day...for the unexamined life is not worth living.

We are in fact convinced that if we are ever to have pure knowledge of anything, we must get rid of the body and contemplate things by themselves with the soul by itself. It seems, to judge from the argument, that the wisdom which we desire and upon which we profess to have set our hearts will be attainable only when we are dead and not in our lifetime.