I have never doubted the truth of signs, Adso; they are the only things man has with which to orient himself in the world. What I did not understand is the relation among signs . . . I behaved stubbornly, pursuing a semblance of order, when I should have known well that there is no order in the universe. But in imagining an erroneous order you still found something. . . . What you say is very fine, Adso, and I thank you. The order that our mind imagines is like a net, or like a ladder, built to attain something. But afterward you must throw the ladder away, because you discover that, even if it was useful, it was meaningless . . . The only truths that are useful are instruments to be thrown away.