My country was such a different place before FDR and World War II. It is a struggle to see that world through 19th and early 20th century eyes. FDR’s responsibility for the transformation cannot be underestimated and this book does an estimable job of reviewing his life and work. Highly recommended. But having finished it, I can’t say I have any idea where his radicalism came from. Perhaps this is not the fault of the book; he seems to have been a fundamentally private person. And a truly singular one at that.