In "The World According to Garp," John Irving explores the complexities of life through the experiences of its central character, Garp. The narrative delves into themes of identity, loss, and the challenges inherent in growing up. Garp's journey reflects the necessity of confronting obstacles and embracing change as a part of personal development.

The quote from Garp, "a man grows only by finishing one and starting another," encapsulates the idea that growth stems from both the completion of past endeavors and the willingness to embark on new ventures. It highlights how life is a continuous cycle of endings and beginnings, emphasizing that each phase contributes to one's evolution and understanding of the world.