He'd be sharper than a serpent's tooth, if he wasn't as dull as ditch water.
Authentication Score 3
Original Citation
Dickens, Charles. "Our Mutual Friend." All the Year Round. London: Chapman and Hall, May 1865, pt. 13, bk. 3, ch. 10.
Current Citation
Dickens, Charles. Our Mutual Friend, edited by Adrian Poole. Penguin, 1998, bk. 3, ch. 10.