Graham this week realised a long-held ambition of meeting one of the few heroes of social media, Steve Silberman, once described by Graham as the ‘Roger Federer of Tweeting’. Long a prominent journalist, @stevesilberman is an authentic star of Twitter and has recently published NeuroTribes, his new perspective on autism, currently riding high in the New York Times best-sellers list. Recently, the book was long-listed for this year’s Samuel Johnson Prize for non-fiction.

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Steve Silberman (RHS) with Graham in London

Graham said ‘It was a real thrill to meet Steve. I have long admired his journalism, and been amazed by the sheer profusion and quality of his Tweets, which attest to his impressively wide interests, as well as his deep humanity’. The conversation, at the Brasserie Zédel in Piccadilly, ranged far and wide, Steve predictably demonstrating the catholicity of his thinking. At the end, Steve took out a copy of Neurotribes, and on his way home Graham wolfed down the two chapters featuring Paul Dirac. ‘I really can’t wait to read it from cover to cover’, he said: ‘it looks a tremendous book.’