"I think of myself as a historian more than as a statesman. As a historian, you have to be conscious of the fact that every civilization that has ever existed has ultimately collapsed. History is a tale of efforts that failed, of aspirations that weren't realized, of wishes that were fulfilled and then turned out to be different from what one expected. So, as a historian, one has to live with a sense of the inevitability of tragedy. As a statesman, one has to act on the assumption that problems must be solved."