What did Epicurus write?

Epicurus, the ancient Greek philosopher, wrote extensively on ethics, physics, and the nature of happiness. His most notable works include "Letter to Menoeceus," which outlines his philosophical views on pleasure and the pursuit of a happy life, and "Principal Doctrines," a collection of his key teachings. Although much of his work has been lost, his ideas emphasized the importance of seeking pleasure wisely and living a life free from unnecessary fears, particularly the fear of death.