I think this is my favourite of the books Rowan Williams has written - he can be a bit over-intellectual and overwhelming.
Rowan Williams is, of course, the Archbishop of Canterbury, and the book is about the Desert Fathers, who were the first experimenters in how to live in Christian communities, which became the later monasteries and convents. The actual title is Silence and Honey Cakes (though I so want to read Silence of the Honey Cakes now - a prequel to Silence of the Lambs, perhaps?). It's meant to show the two different paths to "enlightenment", for want of a better word - either silence and austerity, or enjoying yourself with honey cakes. It's aimed at serious lay Christians who are interested in the early history of their faith - and the stories about the Desert Fathers and Mothers still have relevance today. I particularly like the saint who used to be a highwayman!
The Irish monks who went off to remote places like Skellig Michael were much influenced by the Desert Fathers.