"The useful is the noble and the hurtful is the base."

"A life without investigation is not worth living."

"By harming a horse, you decrease his excellence. Thus, by harming a person, you decrease their excellence."

"Those whose hearts are fixed on reality itself deserve the title of Philosophers."

"'Excellence' is not a gift, but a skill that takes practice. We do not act 'rightly' because we are 'excellent', in fact we achieve 'excellence' by acting 'rightly'."

"Will life be worth having, if that higher part of man be destroyed, which is improved by justice and depraved by injustice?"

"If you do not take an interest in the affairs of your government, then you are doomed to live under the rule of fools."