The future of nations cannot be frozen. . . cannot be foreseen. If we are going to accomplish anything in our time we must approach our problem in the knowledge that there is nothing rigid or immutable in human affairs. History is a story of growth, decay and change. If no provision, no allowance is made for change by peaceful means, it will come anyway - and with violence.
He would write it for the reason he felt that all great literature, fiction and nonfiction, was written: truth comes out, in the end it always comes out. He would write it because he felt he had to.