Dostoyevsky on nonsense, from Crime and Punishment:

Do you suppose I’m going on like this because they talk nonsense? Rubbish! I like it when they talk nonsense! Talking nonsense is the sole privilege mankind possesses over the other organisms. It’s by talking nonsense that one gets to the truth! I talk nonsense, therefore I’m human. Not one single truth has ever been arrived at without people first having talked a dozen reams of nonsense, even ten dozen reams of it, and that’s an honourable thing in its own way; well, but we can’t even talk nonsense with our own brains! Talk nonsense to me, by all means, but do it with your own brain, and I shall love you for it. To talk nonsense in one’s own way is almost better than to talk a truth that’s someone else’s; in the first instance you behave like a human being, while in the second you are merely being a parrot! The truth won’t go away, but life can be knocked on the head and done in. I can think of some examples. Well, and what’s our position now? We’re all of us, every one of us without exception, when it comes to the fields of learning, development, thought, invention, ideals, ambition, liberalism, reason, experience, and every, every, every other field you can think of, in the very lowest preparatory form of the gymnasium! We’ve got accustomed to making do with other people’s intelligence — we’re soaked in it! It’s true, isn’t it? Isn’t what I’m saying true?