Der Ausdruck der Gemüthsbewegungen bei dem Menschen und den Thieren 1872

This is the title page of Charles Darwin's book, *Der Ausdruck der Gemüthsbewegungen bei dem Menschen und den Thieren* (The Expression of the Emotions in Man and Animals), published in 1872. This work expanded on Darwin's theory of evolution by examining the physical and behavioral expressions of emotions in humans and animals. Darwin argues that emotional expressions are inherited traits that developed through natural selection, suggesting a biological basis for human behavior. This groundbreaking work is considered a landmark in the fields of evolutionary biology and psychology.