J.B.S. Haldane said it first.
“On Being the Right Size”.
“You can drop a mouse down a thousand-yard mine shaft and, on arriving at the bottom, it gets a slight shock and walks away. A rat is killed, a man is broken, a horse splashes.”
— J.B.S. Haldane
(He was heard to add as he walked away, “Square-cube Law, bitches!”).