When I read the news that Umberto Eco, my lodestar of the mind, had shuffled off this mortal coil, I felt bereft, remembering my first brush with Eco&rsquos novels and essays, and the sense of limitless horizons that they seemed to contain. This philosopher of the word, master linguist and semiotician, was also adept in conjuring up incredible worlds&mdashsome real, others fantastical&mdashwhere you could lose yourself. His books were gripping, immersive. I was in my late teens when I read the classics, The Name of the Rose and Foucault&rsquos Pendulum. They were dense, difficult works, especially the latter, but endlessly rewarding, because they also contained an innate enthusiasm to engage with the world that was extremely attractive to a young mind.