evidence: But where Hemingway surely has been influential is in what serious, artistically ambitious writers have learned from close attention to his work. The Hemingway who wrote the stories "Indian Camp," "The Killers," "Big Two-Hearted River" and "A Clean, Well-Lighted Place," and the books "The Sun Also Rises," "A Farewell to Arms" and "A Moveable Feast," was a superb writer, subtle and profound and courageous. Anyone who aspires to fine narrative storytelling, be it fictional or factual, has much to learn from the complicated gentleman from Oak Park. [...] Hemingway’s best prose exemplifies what I preached. In "A Moveable Feast" he wrote, "All you have to do is write one true sentence. Write the truest sentence that you know." This passage has been mocked as pretentious by people who miss the point. To write the truest sentence that you know requires you, the writer, to be rigorous with yourself about facing what you actually do know, what makes you believe it to be true, and the limits of what you know versus what you merely suppose. It takes no small discipline to write only true sentences — to be true to yourself and to your story.