Louis Menand: How History Is Elusive

From Louis Menand's introduction to Edmund Wilson's To the Finland Station:

Writing history is an imaginative act. Few people would deny this, but not everyone agrees on what it means. It doesn’t mean, obviously, that historians may alter or suppress the facts, because that is not being imaginative; it’s being dishonest. The role of imagination in writing history isn’t to make up things that aren’t there; it’s to make sensible the things that are there. When you undertake historical research, two truths that once sounded banal come to seem profound. The first is that your knowledge of the past—apart, occasionally, from a limited visual record and the odd unreliable survivor—comes entirely from written documents. You are almost completely cut off, by a wall of print, from the life you have set out to represent. You can’t observe historical events; you can’t question historical actors; you can’t even know most of what has not been written about. Whatever has been written about therefore takes on an importance which may be spurious. A few lines in a memoir, a snatch of recorded conversation, a letter fortuitously preserved, an event noted in a diary: all become luminous with significance—even though these are just the bits that have floated to the surface. The historian clings to them, while somewhere below, the huge submerged wreck of the past sinks silently out of sight.