The Expression of the Emotions in Man and Animals

The Expression of the Emotions in Man and Animals is a nonfiction book by Charles Darwin, first published in 1872. It is one of Darwin’s major works on evolutionary theory, and it grew out of a chapter he had originally planned to include in The Descent of Man. In this book, Darwin looks at the biological side of emotional behavior and examines how expressions and gestures, such as smiling, frowning, shrugging, raised eyebrows in surprise, and baring the teeth in anger, can be understood through human and animal comparison.

This book suits readers interested in Darwin, evolution, the science of emotion, and the links between human behavior and animal life. It is a study rather than a narrative, so it works best for someone comfortable with careful observation, argument, and a historical scientific approach. If you like nonfiction that explores everyday expressions from a biological angle, this sits naturally alongside other academic writing on evolution and human nature.