Ernest Hemingway's experiences significantly shaped his writing style, characterized by simplicity and conciseness. His time as an ambulance driver in World War I exposed him to the brutality of war, influencing his depictions of conflict and human emotion. Hemingway’s travels and encounters with expatriates in Paris also enriched his narrative perspective. Personal struggles, including his battles with depression and relationships, informed the themes of masculinity and isolation found in his works. His distinctive writing style, often referred to as the "Iceberg Theory," reflects his belief that the deeper meaning should exist beneath the surface of the text.