“Suddenly Einstein jumped up. “What are you doing?” he demanded. “Are you boiling the liver in water?” Mrs. Frank allowed that was indeed what she was doing. “The boiling-point of water is too low,” Einstein declared. “You must use a substance with a higher boiling-point such as butter or fat.” From then on, Mrs. Frank referred to the necessity of frying liver as “Einstein’s theory.”

“Suddenly Einstein jumped up. “What are you doing?” he demanded. “Are you boiling the liver in water?” Mrs. Frank allowed that was indeed what she was doing. “The boiling-point of water is too low,” Einstein declared. “You must use a substance with a higher boiling-point such as butter or fat.” From then on, Mrs. Frank referred to the necessity of frying liver as “Einstein’s theory.”

— Walter Isaacson