David was my MSC tutor at the LSHTM back in 2002-2003. He was instrumental in providing me with a stable, motivational environment to test out my precocious, probably annoying theories as a young scientist, and therefore he's one of the reasons I'm still working in malaria research nearly 20 years later myself at the LSHTM. I wish his family to know that to me he was really one of the kindest and most openhearted guys around and they should be (and I'm sure are) proud.