"It is a great advantage to a President, and a major source of safety to the country, for him to know that he is not a great man," wrote President Calvin Coolidge in his autobiography, originally published in 1929. An expanded and annotated version of that book, which historian Craig Fehrman calls "the forgotten classic of presidential writing," has recently been published by ISI Books. Amity Shlaes, chair of the Calvin Coolidge Presidential Foundation and co-editor of the new edition of the autobiography, joins us to talk about the book and its importance today.  

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