The Lincoln Warning?

Rule #1: "People are stupid. Given proper motivation, almost anyone will believe almost anything. People will believe a lie because they want to believe it's true, or because they are afraid it might be true. People’s heads are full of knowledge, facts, and beliefs, and most of it is false, yet they think it all true. People 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."
Primordial Rule: "The rule unwritten. It is the secret of all life. It is the essence of life itself. You are a creator and master of your own reality. You ultimately make your own rules."
All the rules: [link to sot.wikia.com]