William Shakespeare, regarded as the greatest playwright, authored 'Julius Caesar', a tragedy believed to be written in 1599, illustrating the conspiracy and assassination of the Roman leader Julius Caesar and the ensuing civil war. The play highlights Marcus Brutus' moral struggle as the central character, despite Caesar being the title figure, reflecting societal anxieties over leadership succession during Queen Elizabeth's time. Major themes include the corruptive nature of power and the conflicts of honor, loyalty, and ambition among the characters.