Freedom is secured not by the fulfillment of one's desires, but by the removal of desire.
Control thy passions lest they take vengence on thee.
It is not he who reviles or strikes you who insults you, but your opinion that these things are insulting.
It were no slight attainment could we merely fulfil what the nature of man implies.
It was the first and most striking characteristic of Socrates never to become heated in discourse, never to utter an injurious or insulting word -- on the contrary, he persistently bore insult from others and thus put an end to the fray.
No man is free who is not master of himself.