Education and admonition commence in the first years of childhood, and last to the very end of life.
PlatoSo the nature required to make a really noble Guardian of our commonwealth will be swift and strong, spirited, and philosophic.
PlatoSOCRATES: Perhaps we may be wrong; if so, you in your wisdom should convince us that we are mistaken in preferring justice to injustice. THRASYMACHUS: And how am I to convince you, he said, if you are not already convinced by what I have just said; what more can I do for you? Would you have me put the proof bodily into your souls?
Plato