'The Prodigal World' is a collection of sermons from the 1930s by Fulton J. Sheen, interpreting the parable of the Prodigal Son in the context of the modern world and 20th-century spirituality. Sheen argued that Western civilization had exhausted its spiritual capital, its belief in God and moral values leading to chaos. The book is a compilation of 17 sermons delivered from December 29, 1935, to April 12, 1936. These sermons interpret the parable of the Prodigal Son from the Bible. Sheen links the parable to the spiritual and moral decline in the world at that time. The book aims to inspire readers to go through stages of purification, perfection, and redemption to return to the heart of God.