In this new book, I open with a Hebrew quotation nobody is able to understand. This is in order to say, O.K., do you want to play this game? You are my friend, and we go. Otherwise, too bad for me or for you. I think it is untrue that my books are impenetrable. On the contrary, I think I am a sort of great vulgarizer. I put down certain difficult stuff, but I give my readers clues to understand what this kind of stuff is.