I didn't really know Dave, and we had very different views on many things. However, I encountered him at various times over the past 15 years, and he always remembered my name, asked about my son, by name, and seemed genuinely interested in my life, and my thoughts on various issues, even those on which we disagreed. He respected others despite their opposing views, a rare commodity these days. 

My condolences to his family, and may he rest in peace.