A dear colleague and friend died last night. It was shocking and unexpected to hear the news, even though he had been struggling with a rare debilitating disease for many months. Christian was the most alive person I have ever met. He would always greet you with genuine enthusiasm and delight, full of ideas and wit and ready to whoop with laughter at the slightest excuse. He inspired me to want to work for him and always gave me reason to value my efforts. I think he invested himself in every single moment of every day, the way we are all supposed to, and even when fate turned his body into an unresponsive machine, his smile lit up the room and his greeting was as warm as always. Just when you thought life was ordinary, he would start to talk about possibilities and you would feed on the adrenalin and the confidence and leave recharged and full of purpose. I will miss him very much.