"Woolf's Darkness" by Rebecca Solnit

"Nonfiction has crept closer to fiction in our time in ways that are not flattering to fiction, in part because too many writers cannot come to terms with the ways in which the past, like the future, is dark. There's so much we don't know, and to write truthfully about a life, your own or your mother's, or a celebrated figure's, an event, a crisis, another culture is to engage repeatedly with those patches of darkness, those nights of history, those places of unknowing. They tell us that there are limits to knowledge, that there are essential mysteries, starting with the notion that we know just what someone thought or felt in the absence of exact information.

Often enough we don't know such things even when it comes to ourselves, let alone someone who perished in an epoch whose very textures and reflexes were unlike ours. Filling in the blanks replaces the truth that we don't entirely know with the false sense that we do. We know less when we erroneously think we know than when we recognize that we don't."