This was a FANTASTIC read. Short, irreverent, Cullen looks at select presidents and reveals how they made mistakes and then made up for them, during and after their presidencies. Ultimately, this is a great book if you are already somewhat familiar with presidential histories; part of the humor is understanding his little side comments. He has a great section for further reading in his source notes, where he discusses some of the materials that he used, along with reputable authors. How could I not like an author who, when referring to all of the literature on Thomas Jefferson, uses the phrase “blah, blah, blah.” A great read for history buffs.