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He encouraged me to select this topic and then spent many days and nights discussing with me all the intricate aspects of it, reading and rereading my manuscript many times in order to help me with its content. The final shape of this book owes a lot to his brilliant and innovative insights. I would also like to thank him for his patience during the thorny times of writing this book, as well as for his optimism and encouragement throughout the whole process, which gave me the necessary strength and the buzz to accomplish this project.


