Aristotle was a Greek philosopher born in 384 BC in Macedonia who died in 322 BC in Chalcis, Greece. He studied at Plato's Academy from 368 BC to 348 BC. He was one of the most influential philosophers, tutoring Alexander the Great and founding his own school called the Peripatetics. Aristotle analyzed human character traits and communication models. He believed that virtues lay between deficiencies and excesses, and that good public speaking requires matching speeches to audiences and occasions. For example, when Alexander the Great gave a speech to encourage soldiers in battle, he emphasized their courage rather than potential cowardice or rashness.