> Two decades ago I turned full-time to philanthropy and threw myself into supporting public education, scientific and medical research, and visual and performing arts, believing it was my responsibility to give back some of what had so generously been given to me. But I’ve come to realize that no amount of philanthropic commitment will compensate for the deep inequities preventing most Americans — the factory workers and farmers, entrepreneurs and electricians, teachers, nurses and small-business owners — from the basic prosperity we call the American dream.