Socrates, according to Plato, had no fear of death, proclaiming to the court;
To fear death, my friends, is only to think ourselves wise without really being wise, for it is to think that we know what we do not know. For no one knows whether death may not be the greatest good that can happen to man. But men fear it as if they knew quite well that it was the greatest of evils. (Apology 29a)
If you put me to death, you will not easily find another who, if I may use a ludicrous comparison, clings to the state as a sort of gadfly to a horse that is large and well-bred but rather sluggish because of its size, so that it needs to be aroused. It seems to me that the god has attached me like that to the state, for I am constantly alighting upon you at every point to arouse, persuade, and reproach each of you all day long. (Apology 30e)
Socrates famously confronts his fellow citizens with honesty, saying;
Men of Athens, I honour and love you; but I shall obey God rather than you and, while I have life and strength, I shall never cease from the practice and teaching of philosophy, exhorting anyone whom I meet after my manner, and convincing him saying: Oh my friend, why do you who are a citizen of the great and mighty and wise city of Athens care so much about laying up the greatest amount of money and honour and reputation and so little about wisdom and truth and the greatest improvement of the soul, which you never regard or heed at all? Are you not Ashamed of this? And if the person with whom I am arguing says: Yes, but I do care; I do not depart or let him go at once; I interrogate and examine and cross-examine him, and if I think that he has no virtue, but only says that he has, I reproach him with undervaluing the greater, and overvaluing the less. And this I should say to everyone whom I meet, young and old, citizen and alien, but especially to the citizens, inasmuch as they are my brethren. For this is the command of God, as I would have you know: and I believe that to this day no greater good has ever happened in the state than my service to the God.
For I do nothing but go about persuading you all, old and young alike, not to take thought for your persons and your properties, but first and chiefly to care about the greatest improvement of the soul. I tell you that virtue is not given by money, but that from virtue comes money and every other good of man, public as well as private. This is my teaching, and if this is the doctrine which corrupts the youth, my influence is ruinous indeed. But if anyone says that this is not my teaching, he is speaking an untruth. Wherefore, Oh men of Athens, I say to you, do as Anytus bids or not as Anytus bids, and either acquit me or not; but whatever you do, know that I shall never alter my ways, not even if I have to die many times (29d-30c).