In The Expression of the Emotions in Man and Animals, Charles Darwin delves into the fascinating world of genetically determined behaviors, exploring the emotional connections between humans and animals. Published in 1872, this work follows his groundbreaking On the Origin of Species and coincides with The Descent of Man. Darwins goal is to uncover the animal roots of human traits, such as the way we purse our lips in concentration or tighten our eye muscles in anger. Collaborating with notable British psychiatrists like James Crichton-Browne, this book stands as Darwins significant contribution to the field of psychology. Join us as we explore the intricate tapestry of emotions that connect us to our feathered friends and beyond. - Summary by Availle