dr. paul kennedy. >> host: new book out on the market, "underdogs: the making of the modern marine corp."?? marine and professor aaron o'connell is the awe -- author. >> host: this is the cover of a new book out in august 2012 "seven principles of good government, liberty, people, and politics" written by gary johnson, also the libertarian party nominee for president in 2012. governor johnson, when and why did you leave the republican party and become a libertarian? >> well, you know, i've probably been a libertarian my entire life. it's kind of coming out of the closet. i think there's a lot more americans in the country that declare themselves libertarian opposed to voting libertarian so, you know, the pitch i'm trying to make now is vote libertarian with me, just one time, give me a shot at changing things, and if it doesn't work out, you can return to tyranny, and i'm going to argue that is what we have right now. >> what are the seven principles of good government you write about? >> well, one is being reality based. find out what's what, base decisions and actions on that, make s