"doublethink
/dŭb′əl-thĭngk
noun
Thought marked by the acceptance of gross contradictions and falsehoods, especially when used as a technique of self-indoctrination.
The power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.
Believing two contradictory ideas at the same time." *
And of course, by its very nature, it is impossible for one to recognize when one is doublethinking.
Terry, 230RN
*The American Heritage® Dictionary of the English Language, 5th Edition