‘There’s much to recommend in Duff’s perceptive exploration’

– Sunday Business Post

‘Interesting… What is clear from The Secret Life of Sleep is that our relationship with the Sandman has changed greatly over the millennia, and it looks like it’s going to continue to change even more in the future’

– Big Issue

‘Duff is right to identify that many of us are sleepless princesses, now, prickled by anxiety and text messages, by lights and to-do lists and rubbish on the internet; and right, too, that the intersection of the new science of the brain and our myths about sleep is a fascinating area.’

– Guardian

‘Timely and highly original’ 4/5 stars.

– New Internationalist

'A charmingly written compendium… Duff offers a rich understanding of the subject in which personal insights blend with an amazing array of perspectives in ways that always seem to enhance and complement each other.'

– Jeannette Mageo – Professor of Anthropology at Washington State University and author of, Dreaming Culture

'A highly readable blend of science, dream analysis, literature and psychology, to help make us more conscious of all that lies tantalisingly beyond consciousness.'

– Lucy Beresford, novelist, psychotherapist, and broadcaster

'What distinguishes Duff's work from the average popular science title is her beautifully nuanced, lyrical prose and astute recognition that sleeping and dreaming have a much deeper meaning in our lives beyond the research laboratory.'

– Booklist

'Full of unique insights and surprising facts, this book brings to the fore an entire world that exists behind closed eyes.'

– Kirkus

'Duff leads an absorbing foray into the vibrant activity that we otherwise sleep right through.'

– Publishers Weekly