And I said, "" Sir, I do. "" He said, "" So do I. "" He said, "" When I leave office, I'm going to spend my time writing a book on why Jesus Christ rose again, and why it's so important to believe that. "" In one of his plays, Alexander Solzhenitsyn depicts a man dying, who says to those gathered around his bed, "" The moment when it's terrible to feel regret is when one is dying. "" How should one live in order not to feel regret when one is dying?