Daily Show LBJ Quote for Enemies in Tents

I had to mention this LBJ quote I heard on the Daily Show Weds, March 21, 2007 CE. It was a quote Doris Hearns Goodwyn offered in reference to the Lincoln strategy of bringing political adversaries into his administration so he could hear diverging opinions and ideas on matters. In this context, Goodwyn said that LBJ said:

"Its better to have your enemies inside your tent pissing out, rather than have them outside your tent pissing in."

Can you make those kinds of quotes up?