The Expression of the Emotions in Man and Animals (Darwin)

In "The Expression of the Emotions in Man and Animals," Darwin explores how humans and animals show feelings through facial expressions, gestures, and postures. He argues these expressions are universal across cultures and species because they evolved to communicate emotions like happiness, anger, or fear. Darwin suggests that these signals help individuals respond appropriately in social situations, promoting survival and social bonding. The book highlights that many emotional expressions are inherited from our animal ancestors, revealing common roots in how all mammals communicate their inner feelings outwardly.