To the pure geometer the radius of curvature is an incidental characteristic - like the grin of the Cheshire cat. To the physicist it is an indispensable characteristic. It would be going too far to say that to the physicist… — Arthur Eddington Copy Share Image
“Apparently, when people travel between dimensions, their physical forms are "no longer observable," which is a quantum mechanics thing, and explaining it involves this whole story about a cat that's in a box and is simultaneously alive and dead until… — Claudia Gray Copy Share Image
