What we know of Socrates comes not from himself, since he never (or at least we do not think) wrote his ideas down. Socrates’ main ideas, person and life is brought to us by two of his students: Plato and Xenophon. Other certain aspects are told from the perspective of Aristotle and Aristophanes.
Socrates is notorious for many things, but perhaps his most distinguishing feature is how he walked around towns and began to talk to people in different positions of life about what they thought they knew, and Socrates would always show the person he was speaking to that what the person thought he knew wasn’t actually correct or right. For this Socrates became hated, and it was this showing up of people in supposed positions of authority that eventually caused him to be on trial and then executed. Socrates is most probably the father of philosophy, and his ideas, as well as his tool of Socratic dialogue, are still hugely influential today.
There are so many different ideas which Socrates put forward and discussed, brought to us mainly in the numerous dialogues of Plato, but only a couple will be talked about here. Firstly, Socrates did not believe in democracy, and used the analogy of a ship which was about to sail off with a crew. Who would we want to run the sailing of the ship? Would we want somebody trained in sailing the ship, or would we want everybody on the ship to have a say in running it, regardless of whether they had any knowledge of sailing or not? Socrates argued that we would want the former, and likewise we should want this for the running of our country-somebody who knows what they’re doing, a ‘philosopher-king.’ Secondly, Socrates’ idea of wisdom is a very different one to the general understanding of wisdom. Rather than being full of knowledge and experience, wisdom for Socrates was the recognition: ‘I know that I know nothing.’ It was, for Socrates, acknowledgement of his own ignorance which made him wise.
Socrates was hugely influential on his pupils and on the city of Athens, and without his ideas, philosophy today might be quite different.