Einstein, Newton, and Pascal are up in heaven, and they decide to play hide-and-seek.
Being the youngest, Einstein is designated as "it," so he closes his eyes and begins counting.
Pascal runs off and hides behind a fountain, but Newton just takes out a piece of chalk and a tape measure, draws a one-metre by one-metre square on the floor, and steps into it.
Einstein finishes counting, opens his eyes, sees Newton standing there, and tags him. "Got you!" Einstein cries.
Newton just smiles and shakes his head. "No, Albert. You caught Newton over a square metre. You got Pascal."