A delusion is a persistent, often bizarre, false belief maintained despite compelling and readily available evidence to the contrary. As we reminisce, our brain connections are malleable so that some of those shadings work their way into our own synapses and become part of our own memories, leaving us with a firm conviction in our version of events. But one of the best-replicated findings of cognitive psychology is that human memories, even for very significant events, are often faulty. When thinking about how to address the deluge of dogmatic delusion today, we need to consider the conditions under which people acquire their delusions. If we want people to engage in reasonable discussion, we need to engage with them based on common values that offer a realistic prospect for a better life, including security and dignity.