Wizard's First Rule

I hope no one who actually sees this page won't get turned away by the title, the wizards first rule is very important, and i hope to say something about the others rules eventually as well. Every rule is very serious and has a very important meaning.
The 1st rule is:
"People are stupid; given proper motivation, almost anyone will believe almost anything. Because people are stupid, they will believe a lie because they want to believe it's true, or because they're afraid it might be true. Peoples' heads are full of knowledge, facts and beliefs, and most of it is false, yet they think it all true. People are stupid; they can only rarely tell the difference between a lie and the truth, and yet they are confident they can, and so are all the easier to fool."
This is from the book Wizards First Rule by Terry Goodkind.

I hate this rule because it is true, we are all stupid and we all make mistakes, and it is so easy to trick us. I know from personal experience how easy it is to be tricked into believing a lie. There are just some people in my life who i really wish would understand this, that they can be wrong sometimes even though they believe they are right

I know this post is very short but its all i can think of to say right now, if you agree or disagree or anything please say something