We have been lied to!

The question states"history is a lie commonly agreed upon." by Voltaire.Voltaire was a great french enlightenment writer and philosopher.He talks about how we been told this lies about history which we all believe.I believe its true because i have learned about some interesting thing in my class which i was never told as a child.I read this quote and i figured that Voltaire is trying to say that our government tales lies,and also cover up things,which i think is wrong.Everyone has a right to know what has really happened in the past no matter how violent it was.That is what i think Voltaire meant in this quote.