Which sentence best describes the main idea of the text on this page

What is the central idea in this advice from branch rickey to jackie robinson?  

In a 10-12 sentence response-style paragraph, explore the degree to which you agree or disagree with faulkner’s message. “i believe that man will not merely endure: he will prevail. he is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance. the poet's, the writer's, duty is to write about these things. it is his privilege to man endure by lifting his heart, by reminding him of the courage and honor and hope and pride and compassion and pity and sacrifice which have been the glory of his past. the poet's voice need not merely be the record of man, it can be one of the props, the pillars to him endure and prevail” (faulkner 773-775).

From letter to viceroy, lord irwin: identify gandhi's central claim in this letter. what key reasons does he provide to support his claim?