Towards the end (p. 222) of this head-banging autobiography, the author explains his reputation as a tough reviewer of other books. I'd love to imitate him, but cannot avoid giving him five stars, for five reasons.
First, I literally read this book at one sitting - OK lying down on my bed, for four hours 5 minutes, not even one trip to the loo. Most credit for page-turnability must go to the writing; but some also to fine contributions by the editorial and design teams.
Second, accuracy. He describes so well the Oxford I knew, like him, as an Oxford B. Phil (Philosophy) student a few years earlier and from a non-Oxbridge background.
Third, doggedness. This "Wilde Reader in Mental Philosophy at the precocious age of thirty-three" failed his 11-plus. His greatest intellectual achievement was learning Italian from scratch.
Fourth, stimulation. This is not a crash-course in philosophy. However, I found enough said sufficiently clearly on metaphysics - oddly, a word never mentioned - and on moral philosophy to stir my own flaccid philosophical loins.
Fifth, anecdotal warmth. I enjoyed the accounts of philosophers behaving generously or pettily. It's a book that humanizes philosophy.