Opinions and Reflections: A Free Mind at Work 1990–2015 by Paul Monk Barrallier Books, 2015, 518 pages, $44.95   Paul Monk is what used to be called a freethinker. He calls himself a “public intellectual”. He lives for ideas and the pursuit of truth. He will not and cannot surrender to any party, ideology, church or sect. Opinions and Reflections, his selection of some 120 commentaries, long and short, on public events over the past twenty-five years, is his way, he tells us, of declaring “Je suis Charlie”. It is his manifesto of freedom of expression. It begins with an…