Wisdom is knowing how little we know.

If he who does not know kept silent, discord would cease.

We are what we repeatedly do. Excellence then is a habit.

Not life, but good life, is to be chiefly valued." "It is not living that matters, but living rightly. The unexamined life is not worth living.

Besides, it is a shame to let yourself grow old through neglect before seeing how you can develop the maximum beauty and strength of body; and you can have this experience if your are negligent, because these things don't normally happen by themselves.

Life without enquiry is not worth living for a man.

An education obtained with money is worse than no education at all.