Theodore Roosevelt was an original American Badass. He was an accomplished naturalist, historian, and author, but he was also a cowboy, explorer, and soldier. He won both the Medal of Honor for military valor AND the Nobel Peace Prize for almost single-handedly ending a war-- a completely absurd (and almost certainly never to be repeated again) combination. At one point, he was shot in the chest by a would-be assassin right before giving a speech, but he just went ahead and gave the speech anyway and didn't bother checking into the hospital until afterward. (I have also heard a rumor that one time he traveled forward through time and kicked Chuck Norris's ass just for fun, but this has not been substantiated.)
Oh yeah, he was a decent president too. Roosevelt devoted his time in office to castrating major corporations, improving the conditions and rights of laborers, increasing income and inheritance taxes on the rich, putting huge chunks of wilderness under federal oversight/protection, phasing out nepotism in government in favor of meritocracy, and various other progressive endeavors like that because he considered these to be fundamental and guiding values of the Republican Party. (Perform double-take here.) Despite his aristocratic background, he was far and away the closest thing this country has ever had to a socialist president (especially when one considers the era in which he lived)... and yet he's on Mount Rushmore. Zounds.
So yeah, Theodore Roosevelt was a pretty awesome dude. However, this is a not-very-awesome book about him. The author presents Roosevelt's life and accomplishments in extreme fast-forward, with no logical transitions between many of the events and themes, doubling back unexpectedly on some (frequently she does not seem to realize that she covered the same topic earlier) and leaving gaping holes in others. And rather than discussing her subject in the balanced fashion that is appropriate to a biography of such an influential historical figure, the author enthuses about Roosevelt in uncomfortably purple prose, strewing embarrassing adjectives such as "glorious," "heroic," "unmatched," and worse with reckless abandon while devoting only the occasional afterthought (i.e., no actual discussion) to the less laudable aspects of his persona (for example, his my-way-or-the-highway attitude toward political compromise, his abusiveness toward his enemies, and his bloodlust toward megafauna) that contributed just as much to the sum total of the man. The book's bias is evident not only in the author's prose; lengthy passages of many chapters consist primarily of letters from Roosevelt to his friends or vice versa that discuss his accomplishments-- not exactly objective reportage, especially considering Roosevelt's arrogance and incapacity/unwillingness for introspection. The one-sidedness of the evidence presented is of particular concern given that the author rarely makes arguments of her own or performs any analysis; she merely parrots what Roosevelt or his friends themselves said. When she does bother to put forth an argument or attempt to put a particular accomplishment into context, this often consists of no more than a single sentence. All things considered, the author's historical method and prose style are comparable to those of an intelligent but intellectual lazy and overexcitable college junior-- indeed, this read a lot like a number of term papers I wrote for my college history classes; it just happens to have been expanded to book length (and has much better cover art, I'll admit).
The point being, a litany of accomplishments puffed up with quotes from the subject himself or his friends, presented within a framework of "ain't it cool?" authorial prose but no actual analysis, does not constitute actual historical/biographical substance, and thus this book is really only appropriate as a very crude introduction to Roosevelt. I'm tempted to give it two stars, because books like this do serve a valuable role in presenting important historical figures' lives in a shorter, more easily digested, and thus more approachable format than your David McCulloughs, Doris Kearns Goodwins, etc., and most of what I know about Roosevelt beyond the historical caricature of him, I will admit that I did learn from this book. However, the second star would only for the book's function, which is a quality not of the book, but rather of its genre. And the book, considered on its own merits, is really poor.