What did Pandora release when she opened her vessel?

Pandora released the world’s evils when she opened her vessel. In the myth, the container held troubles that had not previously afflicted human life, and they escaped into the world.

Ancient and modern retellings describe these contents in different ways. They may be called evils, diseases, hardships, or other forms of suffering. The story functions as an etiological myth: it explains why pain and misfortune exist among humans.

The familiar phrase “opened Pandora’s box” now means starting a chain of problems that cannot easily be reversed. This modern idiom preserves the myth’s basic structure while separating it from its ancient religious setting.

The container is usually called a box in English, although Hesiod’s Greek text refers to a pithos, or large jar. The myth’s central action is therefore not the release of treasure or gods, but the escape of harmful conditions.