There are innumerable writing problems in an extended work. One book took a little more than six years. You, the writer, change in six years. The life around you changes. Your family changes. They grow up. They move away. The world is changing. You're also learning more about the subject. By the time you're writing the last chapters of the book, you know much more than you did when you started at the beginning.
David McCulloughWe are raising a generation of young Americans who are, to a very large degree, historically illiterate. It's not their faults. There's no problem about enlisting their interest in history. None. The problem is the teachers so often have no history in their background.
David McCulloughAccording to Adams, Jefferson proposed that he, Adams, do the writing [pf the Declaration of Independence], but that he declined, telling Jefferson he must do it. Why?" Jefferson asked, as Adams would recount. Reasons enough," Adams said. What can be your reasons?" Reason first: you are a Virginian and a Virginian ought to appear at the head of this business. Reason second: I am obnoxious, suspected and unpopular. You are very much otherwise. Reason third: You can write ten times better than I can.
David McCullough