Sex and excretion are reminders that anyone's claim to round-the-clock dignity is tenuous. The so-called rational animal has a desperate drive to pair up and moan and writhe. - Steven Pinker
I must fling myself down and writhe; I must strive with every piece of force I possess; I bruise and batter myself against the floor, the walls; I strain and sob and exhaust myself, and begin again, and exhaust myself again; but do I feel pain? Never. How can I feel pain? There is no place for it. - Harry Houdini