Human Mystery

Found in Ray Monk's huge, and hugely lucid, biography of Robert Oppenheimer, Inside the Centre, a contender for footnote of the year:

It is impossible to tell how much of this story is true. Can one believe that Oppenheimer deliberately dropped his suitcase, intending it to hit the woman? Did he really kiss her? And, perhaps most improbably of all: can one really imagine him travelling third class?