Ronald Dworkin contributed over one hundred articles, reviews, and comments to the New York Review of Books starting in March 1968. The following was originally given as a talk at the Palazzo del Quirinale in Rome in November 2012, when he received the Balzan Prize for his “fundamental contributions to Jurisprudence, characterized by outstanding originality and clarity of thought in a continuing and fruitful interaction with ethical and political theories and with legal practices.” It is presented here with small changes. Ronald Dworkin died on February 14, 2013.