It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.
… fear false knowledge
There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.
Conspiracy theories are beliefs unencumbered by facts.
A delusion is something that people believe in despite a total lack of evidence.
It's not what we don't know that hurts us, people say. It's what we believe is true that isn't that does the damage.
The trouble with the world is not that people know too little; it's that they know so many things that just aren't so.
The cleverest trick of the Devil is that nobody believes in him. It. Her. Well, we have been very stupid.
Our beliefs are, however, often contrary to fact.
You can believe something really hard,' Faith says, 'and still be wrong.
People often think I'm a faker, but I'm usually honest, in a certain way - in such a way that often nobody believes me!
People believed what they wanted to believe, no matter what was right in front of their eyes.
Ignorance is preferable to error, and he is less remote from the truth who believes nothing than he who believes what is wrong.
Myths grow all the time. If I was to listen to the number of times I've thrown teacups then we've gone through some crockery in this place. It's completely exaggerated, but I don't like people arguing back with me.
This is always history's greatest failure, its inability to believe what it sees, what, almost always, someone sees.
