"Fear" by Angelo Mosso is a scientific publication written in the late 19th century. The work delves into the physiological underpinnings of fear and its effects on the human body, exploring the interplay between emotions and bodily responses, particularly focusing on the brain's functions. The opening of the book introduces a personal anecdote, describing the author's experience of fear during his first public lecture. Mosso vividly recounts the turmoil he faced before, during, and after his presentation, including the physical symptoms such as rapid heartbeat and breathlessness, highlighting how anxiety can disrupt cognitive processes. This narrative sets the stage for the book's exploration of how fear influences human physiology, as he intends to examine various emotional disturbances and their associated bodily reactions, promising a scientific analysis of fear’s manifestations and implications. (This is an automatically generated summary.)