When Ronald Dworkin was to deliver his 1988 Tanner Lecture on Human Values at Stanford University, he was introduced by the university's president, Donald Kennedy. Kennedy offered an appreciative account of Dworkin's background and achievements, noted the title of the upcoming talk, then gathered up his notes and turned the podium over to the speaker. Dworkin proceeded to give a two-hour oration on the foundations of liberal equality, breathtaking in its detail and logical rigor and flowing eloquently without a hitch or hesitation. Just as he was concluding, Kennedy rushed up to the dais and exclaimed to the audience: “Please forgive me, I just realized that when I picked up my notes, I also inadvertently picked up Professor Dworkin's manuscript.” Without missing a beat, Dworkin had delivered his entire lecture from memory.