As far as the existing Scratch written records are concerned, only through aristophanes's cloud, Xenophon's memories of Socrates and Plato's dialogues. Socrates in the cloud is a wise man who collects tuition fees for studying natural philosophy, which is different from Xenophon and Plato's records. Both of them think that Socrates is a philosopher who pays attention to ethics and does not charge tuition fees, which is fully reflected in Socrates' defense.
According to the defense, it all started with Delphi's Oracle. Socrates' friend went to the temple of Delphi and asked God, "Is there anyone wiser than Socrates?" God replied, "No". Socrates was shocked by this answer because he knew he was "ignorant". In order to prove that he is not the smartest person, he talks with the so-called smart people in Athens every day. After the conversation, he found that the most intelligent people in others' eyes thought they were wise, but Socrates was better than these wise people because he knew his ignorance, so he concluded: "Human beings do not master wisdom, and wisdom lies in God."
In this way, Socrates talked with politicians, poets and handicraft artists in public, trying to make the Athenians realize their ignorance, reflect on themselves and improve their souls. On the other hand, the humiliation of the so-called wise men made the Athenian youth begin to question the authority, which was one of the reasons why Socrates was voted to death.
Socrates believed that he was guided by God, and his life's work was as busy as a gadfly, so that the citizens of Athens could see themselves clearly. He once appealed to the citizens of Athens: "My good friend, you are a citizen of the greatest Athens city-state known for your wisdom and strength, but you only care about wealth and reputation, not truth and wisdom, and don't improve your soul. Aren't you ashamed of it? " For Socrates, the most important thing for people is to live a reflective life, so as to improve their souls, because "a life without reflection is not worth living."