Dear B Keller, I am very sorry to hear of your father's passing. It may be best not to get caught up in quoting Twain himself. Your father was every bit the human being as Twain was. Pointing out how your father liked Twain & what they shared in common (morals, humor, anything) would certainly stand grand testimony to both men. My heart goes out to you and your family. I think it likely that what is important is already known to you in your heart, and just telling the story of your father's admiration for Mark Twain would easily accomplish the fitting tribute you want to make. With Best Wishes, Bob