Greg Donaghy paints a picture of a man whose ambition never superseded his fundamental decency, his connection to individuals both great and small, and his unwavering loyalty to colleagues, constituents and indeed a country that often treated him with something less than loyalty. This is both a fascinating study of twentieth-century Canada and the somewhat poignant story of a boy with big dreams. - Penny Bryden (Ontario History) During his lifetime Martin published two volumes of memoirs, and the diaries he kept while High Commissioner. But they are dull stuff: too long, too detailed, too stiff; as one reviewer put it, he left out the politics. Donaghy's impeccably researched and immensely readable biography, which draws on new material and numerous interviews, shows the extent to which Martin undersold himself. It also reveals him to be a very complex, highly intelligent, well-read, thoughtful, likeable, convivial, and witty man. It is one of the best biographies I have read in the last decade. - Lorna Lloyd, Keele University (British Journal of Canadian Studies, Vol. 29 No. 2, Fall 2016) In his detailed biography, Greg Donaghy ably chronicles the key roles that Martin played in ... Canadian political and international history ... Grit will surely serve as a valuable reference tool for scholars interested in the inner workings of policy formation and ministerial wrangling, and it illuminates our understanding of one of Canada's important twentieth century political operatives.- Matthew Hayday, University of Guelph (Canadian Journal of History)