AT LAST, SIR TERRY, WE MUST WALK TOGETHER. Terry took Deaths arm and followed him through the doors and on to the black desert under the endless night. The End. That was how @terryandrob, the joint Twitter account of the fantasy author and his assistant Rob Wilkins confirmed the reports of Terry Pratchett's death, age 66, of early-onset Alzheimers disease. Pratchett was a prolific author who wrote frequently of death in fact, a trilogy of books in his grand overarching Discworld series were all about the Grim Reaper himself, the personification of Death struggling with his workload and taking a vacation (with disastrous consequences). When faced with the end of life, Pratchett often responded with the absurd. Having been diagnosed with Alzheimers a few years ago the writer slowed down a little, but by no means was reduced to a snail's pace: he still managed to put out a couple of books a year, continuing his Discworld series and collaborating on a sci-fi series with Stephen Baxter. And they continued to be best-sellers. Pterry, as his numerous fans affectionately dubbed him, took his failing health well. He continued to work, produced a documentary about assisted death practices in Switzerland, and was a fighter to the end. A good time to look back on the man before, not as he is now: here are ten things you didn't know about the late, great Terry Pratchett.