I was privileged to work with Alan while a junior at CDP in the 70's. It was the cradle of many near-geniuses, of which he was one. He was a joy to work with, combining talent, perception and decency in a world full of sharks, narcissists and nonentities. In later years, when he had become famous, he was still happy to acknowledge and converse on the few social occasions we met. I recall him fondly. The world has lost a true gentleman.