Marcus Chown (who I have never met, but who I follow on Twitter) has written a review of The Joy of Tax in the Times Higher Education. In it he says:
I have never met Murphy, but I’ve become aware of him through Twitter, not only because I often agree with his thought-provoking tweets but also because they have helped open my eyes to the economic reality behind the fantasy. And here he has done the impossible: writing a book on tax that is not the literary equivalent of a handful of sleeping pills.
High praise indeed. I am grateful to Marcus. It's worth a read in its own right.