A former professor at a New York City medical school has given it $1 billion, saying the money should be used to cover tuition for all future students. Ruth Gottesman, 93, studied learning disabilities and operated literacy programs at the Albert Einstein College of Medicine in the Bronx, the New York Times reports. Her late husband, David Gottesman, was an early investor Berkshire Hathaway and a protege of Warren Buffett. The financier died in 2022 at age 96. His widow, who chairs the school’s board of trustees, imposed no naming demands. Gottesman said her husband left her a portfolio of Ber…