Fear, anger, joy, sadness four basic emotions, experiences that are common to all people, whatever their age and culture and play a key role in the psychological development of the individual and humankind in general. Emotions are information, a warning and a guide to the service of conservation, the relationship and the socialization of individuals. This book is the result of a dialogue which lasted two years between Antoni and Marcelo Jorge Zentner. These meetings generated a space in which Antoni could freely share their extensive experience as a therapist, to take her Zentner writing without losing the spirit and energy of the conversation. That knowledge of the meaning and function of the four basic emotions unfolds naturally and fluently in a text that is also open to other cross-cutting issues, and invites the reader to explore it with the same freedom.