Portents are signs or omens that are believed to predict future events, often of significant or ominous nature. They can take various forms, such as unusual weather patterns, animal behavior, or celestial occurrences. Throughout history, many cultures, including the Romans and Greeks, have interpreted these signs to guide decisions or forewarn of disasters. In literature and folklore, portents often serve as foreshadowing devices, hinting at upcoming challenges or changes. They can be found in works like Shakespeare's plays, where strange events signal impending doom or conflict. Understanding portents can provide insight into how societies interpret the unknown and the role of superstition in human behavior.