"It was a low, dull, quick sound —much such a sound as a watch makes when enveloped in cotton. I gasped for breath —and yet the officers heard it not.
I paced the floor to and fro with heavy strides, as if excited to fury by the observations of the men —but the noise steadily increased. Oh God! what could I do? I foamed —I raved —I swore! I swung the chair upon which I had been sitting, and grated it upon the boards, but the noise arose over all and continually increased. It grew louder —louder —louder! And still the men chatted pleasantly, and smiled. Was it possible they heard not? Almighty God! —no, no! They heard! —they suspected! —they knew! —they were making a mockery of my horror!-This I thought, and this I think. But anything was better than this agony! Anything was more tolerable than this derision! I could bear those hypocritical smiles no longer! I felt that I must scream or die! and now —again! —hark! louder! louder! louder! louder!
'Villains!' I shrieked, 'dissemble no more! I admit the deed! —tear up the planks! here, here! —It is the beating of his hideous heart!'”
-Edgar Allan Poe, The Tell-Tale Heart