It is a plain and simple fact that truth is truth no matter where it comes from.
We humans have a weird quirk - we tend to believe people we like and/or respect, and disbelieve people we don't. We also tend to grant validity to a person's opinions based on their position in the world. This is idiocy.
I've often wondered why the people in the pews nod their heads in acceptance at every word the preacher says. Does his position at the front of the church grant him certain abilities denied to the rest of us? Has God given him special insights into the Bible that the rest of cannot possess? If we have a brain and the ability to read, aren't our interpretations as valid as his? Perhaps we think that he must know more than we because he has studied longer. Well, that is just not true. He has not really "studied" at all. He has just been taught by someone who was taught by someone else who - and on and on. And bear this in mind: every new sect of a religion was started when someone didn't agree with his teacher. Martin Luther comes to mind.
And isn't it curious how we believe someone just because they wrote a book? We see an author on a talk show expounding his theories as fact, and say, " I did not know that. But it must be true. After all, he wrote a book."
Of course, the opposite is also true. We often deny validity to a person's opinion based on their profession. For example, an actor takes a stand on something, and we say, "What does he know? He's just an actor." As if being an actor prohibits him from rational thought.
Now don't misunderstand me. Sometimes the preacher and the author are right, and sometimes the actor is an idiot. But it's not automatic. A wise man can be foolish, and a moron can get it right once in a while.
Remember, even a broken clock is right twice a day.
Do your own research, make your own analysis, and learn to think for yourself.