Unjustified

George W. Bush, January 25, 2006, attempting to justify his administration's illegal domestic spying: "When [Osama bin Laden] says he's going to hurt the American people again, or try to, he means it. I take it seriously, and the people of NSA take it seriously."

George W. Bush, March 13, 2002, attempting to justify his administration's failure to kill or capture Osama bin Laden: "I truly am not that concerned about him."

UPDATE: For some reason, this post has reminded me of George Orwell's definition of "doublethink":

To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then when it becomes necessary again, to draw it back from oblivion for just so long as it is needed.