"Every Man In His Humour" is a comedic play by Ben Jonson, first performed in 1598. The play follows the lives of various characters in London who are all attempting to follow their own "humour," or personal inclination. The protagonist, Young Knowell, is a young man who travels to London in search of adventure, and becomes embroiled in the lives of a group of eccentric characters, including a vain aristocrat, a braggart soldier, and a wily tavern owner. As the characters interact and scheme against each other, they reveal their own flaws and contradictions, ultimately leading to a chaotic and humorous conclusion. The play is notable for its exploration of the theme of social status and the foibles of human nature, and for its influence on the development of English comedy.