Is Certainty a Good Thing?

IMO, the content of the meme at left is one of the very best ideas ever propounded by humankind. It speaks to the subject of “cognitive biases,” a big deal nowadays.  However, it’s been attributed to essentially everyone in history.  Who said it first?  Best?

We’ve all read the quote, “All that’s required for evil to conquer the world is that good men do nothing.”  Have you ever noticed that it’s attributed to everyone from Albert Einstein to Edmund Burke to Napoleon Bonaparte?

FWIW, I’m going with Bertrand Russell as the true owner of the quote relating certainty with stupidity.