Connie Willis said this quote

Wrong, and wrong agains,' he said. 'The likeness is already there. The metaphor only sees it. And it is not a mere figure of speech. It is the very essence of our minds as we seek to make sense of our surroundings, our experiences, ourselves, seeing similarities, parallels, connections. We cannot help it. Even as the mind fails, it goes on trying to make sense of what is happening to it.