Even though human behavior and emotions fall within a defined range of expressions, one puzzle remains: why aren’t these ...

Galen, a Greek physician, is born. He develops the theory of the four "humors": blood, phlegm, yellow bile and black bile. Good health is thought to result from a balance of the humors ...

Throughout human history, people have tried to classify each other by describing personality types. The ancient Greeks described the four humors, a theory that personality results from a mixture of ...

The word has evolved from the Ancient Greek physician Hippocrates’s theory of the Four Humors. He believed that the mood of a person was governed by the balance of four different fluids in the ...

But that’s not necessarily a problem for a reader in need of context, unfamiliar with the four-humors theory or ancient surgical practices. When King turns to Christianity, though, her analysis ...