That which has always been accepted by everyone, everywhere, is almost certain to be false.

All your life people will tell you things. And most of the time, probably ninety-five percent of the time, what they'll tell you will be wrong.

Like a lot of things that everybody knows, it wasn’t true.

“The problem with most people,” Samuel cut in, “isn’t that they don’t know a lot of things. Just that most of what they know is wrong.”

Everything popular is wrong.

The prevailing thought is usually the wrong thought.

Everybody knows that."
"Assume for a moment that everybody is wrong.

Everything is false, everything is possible, everything is doubtful.

What all agree upon is probably right; what no two agree in most probably is wrong.

One can be certain that every generally held idea, every received notion, will be an idiocy, because it has been able to appeal to a majority.

Posterity is as likely to be wrong as anyone else.

It is a safe bet that every publicly held idea, every received convention, is foolishness, for it has suited the majority.

People overvalue their knowledge and underestimate the probability of their being wrong.

When great changes occur in history, when great principles are involved, as a rule the majority are wrong.