David was my advisor. He got his PhD at Cornell under Max Black and Norman Malcolm and had a long and productive career. David did important work on causation, mereology, the degree theoretic view of vagueness, as well as other areas of M&E and logic. His book If P then Q helped draw increased attention to conditionals, which continues to this day. David once told me though that he felt that much of his best work would be forever unpublished in the form of comments on others’ papers at APAs. David was one of the funniest philosophers around – those who regularly attended colloquia at the Duke department knew that whenever he was called upon in a Q&A session, an analogy or potential counterexample would be given that was sure to both lighten the mood and make a serious point. He was a conscientious advisor, mostly hands-off but attentive when needed, and guarded in his praise. Once, after I gave a class presentation, David took me aside and (helpfully) noted a couple flaws in it; later that week, at a departmental party, his dear wife Anne approached me and told me, much to my surprise, that David had said that I had given a wonderful presentation. Thinking back on all the evidence, the truth was probably that it was indeed a flawed, graduate-student-level effort but that together, the sometimes reticent David and the effusive Anne made a lovely and complementary duo. David was a good person and a pleasure to be around, and I am very grateful to him for helping me along my way.