Obituary, Professor John D. Barrow 1952-2020. The Sharpest of Minds

On Saturday 26 September, around 4am, John Barrow died aged 67, with his wife Elizabeth and son Roger at his side. From a scientific perspective, it is hard to conceive a more premature end. During lockdown alone, whilst undergoing chemotherapy and in the full knowledge that his cancer was inoperable, John managed to co-author 11 scientific papers and write a new book ("One Plus One"). Even by his own standards of productivity, this is staggeringly impressive, an achievement he was openly proud of. From a broader perspective, with a wife, 3 children and 5 young grandchildren, many strong friendships, and so much more to offer the world, he departed far too soon.