David and I had the good fortune to work together on several obscure projects, and he brought his extensive experience and an abstract way of thinking to each one. He knows what he knows, and he knows what he doesn’t know. He is able to effectively capitalize on his professional relationships to form cooperative efforts. David’s professional and calming demeanor never flickered even when dealing with some truly abrasive people. His clients and colleagues should consider themselves fortunate to be able to work with somebody of his caliber.