the lies of history

"History is the lie commonly agreed upon" by this quote i think Voltaire ment that all the information read in books or told by people is what everyone believes because that is all they know and heard of but i have come to realize now that these so called "facts" are not true at all. History and the creators of these so called facts want people to believe that countries havent their lost wars or battles because they want to be known as winners and the good things they have accomplished, they would never want to admit they have lost or made mistakes. Everyone believes history as it is told now which is false.