It is a real gem, which everyone should read.
Professor Richard Layard, author of Happiness: Lessons From a New Science
the most sophisticated and thought-provoking introduction to utilitarianism produced in the last century, one that in its profusion of thoughts will challenge the critics for years to come...
Bart Schultz, Utilitas
This book is quite brilliantly done. It's a very concise book, but it's intelligible and precise ..It's very readable.
Fivebooks
The Best Philosophy Books of 2017: This book is quite brilliantly done. It's a very concise book, but its intelligible and precise in the way it describes the varieties of utilitarianism. It's very readable and it covers a lot of ground. It covers what you would cover in a university undergraduate course on utilitarianism, but you can read and take it in in four or five hours or so ... Generally, this is the best introduction to utilitarianism that I've seen, with the possible exception of a very old book, which was Utilitarianism: For and Against, by J.J.C. Smart and Bernard Williams.
Nigel Warburton, Five Books
Written with characteristic clarity by the acknowledged heirs of the founders of utilitarianism, this discussion is authoritative, sympathetic though not uncritical, and remarkably comprehensive in a word, ideal.
Jeff McMahan, Whites Professor of Moral Philosophy, Oxford