The 20th century, with revolutionary and rapid developments in travel, communications and computerised technologies, offered new and seemingly limitless horizons which accompanied and amplified distinctive experiences of emotions. The birth of psychology and psychiatry revealed the importance of emotional life and that individuals could have control over their behaviour. Traditional religion was challenged and alternative forms of spiritualism emerged. Creative and performing arts continued to shape understandings and experiences of emotions, from realism to detachment, holistic to fragmented notions of self and society. The role of emotions in family life focused on how to deal with modern day freedom and anxiety. In the public sphere, people used emotion to oppress as well as liberate. Countering threats to national security, as well as personal and cultural identity, politically motivated activities emerged embracing peace, humanitarian, and environmental causes. This volume surveys the means by which the modern experience shaped how, why, and where emotions were expressed, monitored, and controlled.