Pena our daythe last book, the material for which personally selected Umberto Eco, one of the most significant and influential writers, philosophers and scientists of the XX century, who died in 2016."The spell of Satan" - a collection of the best articles by Umberto Eco, published from 2000 to 2015 in the journal L'espresso. The reasons for these texts are very different, from hacker attacks on the Internet and leaked information to the press about the bribery of voters to the century of the "Manifesto of futurism" and the latest and insanely expensive electronic device that disgustingly projected photos during the lecture. Eco has an amazing gift to see in ordinary everyday accidents global social, political and cultural changes and easy language, simple examples to explain the most complex philosophical concepts. Should we be afraid of the loss of privacy as a result of the development of social networks? Where to read the funniest Jewish jokes? How did a cell phone become a natural complement to the physical self? Was Agamemnon worse than Bush? Is it possible to joke about the sacred? Why is Jules Verne better than Emilio Salgari? How to choose a President and how to protect yourself from the Templars? This book will allow you to look at the modern "fluid society" from an unexpected angle.