People believe what they want to believe.

People believe what they need to believe.

People will believe what they want most to believe, what they yearn to be true. Nothing is more readily accepted than the seeming confirmation of an already established prejudice.

People will say bout anything. That don’t mean I have to believe it. What I see with my own eyes, that I believe.

What I believe is not what I say I believe; what I believe is what I do.

I mean, these people really believe what they believe."
"But what they believe is so absurd.

People believe, thought Shadow. It's what people do. They believe, and then they do not take responsibility for their beliefs; they conjure things, and do not trust the conjuration. People populate the darkness; with ghosts, with gods, with electrons, with tales. People imagine, and people believe; and it is that rock solid belief, that makes things happen.

You don’t believe things because they make your life better, you believe them because they’re true.

What people believe and what they’ll do because they believe it is a big part of what’s real, especially in politics.

Belief is just like morality. People who believe something often think they are superior to others.

"Does everyone just believe what he wants to?"

"As long as possible. Sometimes longer."

"What about you?"

"You mean, am I human? Certainly. I don't believe I'm really old. I believe I'm quite attractive. I believe you seek out my company because you think I'm charming - even when you insist on turning the conversation to physics."

What really matters is what you believe.

One believes things because one has been conditioned to believe them.

when people believe a conclusion is true, they are also very likely to believe arguments that appear to support it, even when these arguments are unsound.