This is a book for anyone wanting to understand the human brain and personhood; it is a book for anyone with a loved one with dementia and for those of us who fear dementia . . . Montague takes the reader on an exquisite journey into the human brain and beyond that, to the metaphysics of personhood . . . Occasionally we come across a physicist or economist who, despite their subject matter, can stop you in your tracks. They reel you in without you realising. Montague is a neurologist who does exactly that. She has a rare gift: she makes her craft look simple . . . Throughout this book Montague displays a maturity and wisdom not always observed in clinicians or indeed any other kind of human. Irish Times