I was lucky enough to see him speak a couple of times and learned that he and I share something unique that may be of interest now that he's passed. At one point during a Q and A, he stated his religion as "Apathist." My jaw dropped; I identify as Apathist and until that moment thought I was the only one who did. I thought I'd coined the word and even started work on an Apathist Bible (not really enough material for a book, 'turns out). Essentially, it means someone who does not know if there's a god and I doesn't care.
He was a delightful presence and a brilliant guy. He will be missed.