The wise man does not expose himself needlessly to danger, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life — knowing that under certain conditions it is not worthwhile to live. He is of a disposition to do men service, though he is ashamed to have a service done to him. He does not take part in public displays... He is open in his dislikes and preferences; he talks and acts frankly.