David McCullough: Years ago, when I was first brave enough, when I’d summoned the courage to decide I was going to attempt writing a book, I met a man one night at a party. And he was an elderly fellow, and I was about 28 years old, and I had heard — his name was Harry Sinclair Drago, and he wrote Westerns — and a friend said to me, “You see that old fellow over there? That’s Harry Drago. He’s written over 100 books.” And I thought, “I’d like to talk to him.” So I went over, and I said, “Mr. Drago, I — somebody told me that you’ve written over 100 books.” He said, “Yes, that’s right.” I said, “How do you do that?” He said, “Four pages a day, that’s how you write 100 books. That’s how you write books.”