"Do you know what lies in the Holy Land? A new world. A man who, in France, had not a house, is, in the Holy Land, the master of a city. He who was master of a city begs in the gutter. There, at the end of the world, you are not what you were born, but what you have it in yourself to be."
--Godfrey of Ibelin (Kingdon of Heaven)
Truth is the daughter of time, not of authority.
A person may be of great power and possess impressive credentials. But what that person says or writes does not necessarily reflect the truth.
Truth comes from understanding reality as it is, not as someone says it is or would like it to be. It comes from testing what you perceive against what you already know to be true, and adding to your understanding bit by bit.
Worldly authority cannot decree truth.
Instead, truth reveals itself over time to those who openly pursue it.