My deepest sympathies. I was saddened to hear of David's passing. He was one of my best friends during our University of Chicago days. From my first month at school, David, Jon Cheskin, Dan Katz and I spent many hours together, going to the Chicago Symphony, watching Star Trek, or discussing just about anything. Unfortunately, we didn't keep in touch. I will regret that for the years to come, but I will fondly recall our four years in Chicago.