Albert Einstein has been the subject of, or inspiration for, many works of popular culture. On Einstein's 72nd birthday on March 14, 1951, United Press photographer Arthur Sasse was trying to persuade him to smile for the camera, but having smiled for photographers many times that day, Einstein stuck out his tongue instead. This photograph became one of the most popular ever taken of Einstein, often used in merchandise depicting him in a lighthearted sense. Einstein enjoyed this photo and requested UPI to give him nine copies for personal use, one of which he signed for a reporter. On June 19, 2009, the original signed photograph was sold at auction for $74,324, a record for an Einstein picture. Einstein is a favorite model for depictions of absent-minded professors; his expressive face and distinctive hairstyles have been widely copied and exaggerated. Time magazine's Frederic Golden wrote that Einstein was "a cartoonist's dream come true." "Einstein" has become a byword for an extremely intelligent person. It may also be used sarcastically when someone states the obvious or demonstrates a lack of wisdom or intelligence (as in "Way to go, Einstein!") Many quotes that have become popular via the Internet have been misattributed to him, including "The definition of insanity is doing the same thing over and over and expecting a different result". Recognition In 1999, leading physicists voted Einstein the "greatest physicist ever". His birthday, March 14, is also Pi Day, so called because 3/14 (March 14 in shorthand month-day format) corresponds to 3.14, the first three digits of the number Pi. The town of Princeton, New Jersey, where Einstein lived for more than 20 years, celebrates March 14 every year as "Princeton Pi Day and Einstein Birthday Party." Usage of his name and image The children's television show Little Einsteins and the educational toys and videos of the Baby Einstein series both use Einstein's name, though not his image. Iranian cartoonist and humorist Javad Alizadeh publishes a column titled "4D Humor" in his Persian monthly Humor & Caricature, which features cartoons, caricatures and stories on Einstein-related topics. In 1991 he published in Persian "4D Humor", a comic book on Einstein's life and work, inspired mainly by the Theory of Relativity. Licensing Einstein bequeathed his estate, as well as the use of his image (see personality rights), to the Hebrew University of Jerusalem, which from the mid-1980s has sponsored the Einstein Papers