This book is comprised of a collection of essays on extreme poverty. It focuses on what it means to live in extreme poverty, how to reach the very poor through programs and interventions, and how to make private and public institutions more responsive to their needs. This book also analyzes the relationship between extreme poverty and human rights. It places emphasis on the contribution made by the International Movement ATD Fourth World, and its founder, Joseph Wresinski, to the understanding of the very poor and what is required to fight extreme poverty.