Aristotle
Near the end of Alexander's life, he began to think people might be trying to kill him. He threatened Aristotle in letters he wrote to him. Aristotle often said that he disliked Alexander calling himself a god. The king executed Aristotle's grandnephew Callisthenes as a traitor. Alexander died in Babylon in 323 B.C. without ever going back to Greece. When Alexander died, Athenians started to dislike Macedonians again and Aristotle left the city. He died in Euboea of natural causes that same year, 322BC.