How Minds Change by David Ross

There is no such thing as certainty. This is, you know, from a scientific or psychological, even philosophical domain, everything is probabilistic. We can like hedge our bets, but the concept of certainty is way outside the domain of any of these topics. And we'll talk about Bertrand Russell later, but it's a quote from your book that always makes me think,. well, let's talk about it now because it's such an interesting observation.