In Hesiod’s Pandora myth, evils escaped from the jar before it was closed again. The ancient account describes the vessel as containing harmful conditions that would affect human life once released.
Hesiod does not present the contents as a modern list of separate monsters. His language refers broadly to destructive forces and miseries associated with mortal existence. Later artists and storytellers expanded the contents into recognizable figures such as disease, war, greed, and sorrow.
The episode is often summarized as Pandora releasing “all the evils of the world.” That wording is a later generalization, but it accurately captures the myth’s central function: the opening explains why suffering is present among humans. The story also preserves one remaining presence inside the vessel, which gives the ending an important contrast.
A common mistake is to describe the jar as filled with physical objects. In the oldest literary version, the contents are better understood as personified or abstract troubles rather than ordinary items.