The University of South Dakota is hosting an exhibition from the National Library of Medicine that explores several of William Shakespeare's plays.
"'And There's the Humor of it': Shakespeare and the Four Humors" analyzes how the four bodily humors once believed to define people's physical and mental health influenced Shakespeare's work.
The four humors date back to the ancient Greeks who theorized that a person's health and temperament rely on the balance of four major body fluids: blood, phlegm, black bile and yellow bile.
Ancient Greek philosophers believed that an excess of one humor would affect the individual's personality.
The traveling exhibition opens Tuesday and runs through Sept. 13 at the I.D. Weeks library building on the USD campus in Vermillion.