Jack was one of the first people I got to know when I started at Oxford. As St John's College Cricket Club captain he was so welcoming - even though I was older than most of the team and, even worse, Australian. More recently, we chatted over WhatsApp about our respective work in international development. I can't believe we'll never get the chance to continue our discussion over a beer in Port Moresby as we'd planned. To Jack's family - thank you for giving us such a kind and considerate man. I am so sorry for your loss, and my thoughts are with you.