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The traits of mind essential for critical thinking are interdependent. Consider intellectual humility. To become aware of the limits of our knowledge, we need the intellectual courage to face our own prejudices and ignorance. To discover our own prejudices, in turn, we often must intellectually empathize with and reason within points of view with which we fundamentally disagree. To achieve this end, we typically must engage in intellectual perseverance, as learning to empathically enter a point of view against which we are biased takes time and significant effort. That effort will not seem justified unless we have the necessary confidence in reason to believe we will not be tainted or “taken in” by whatever is false or misleading in the opposing viewpoint.
Furthermore, merely believing we won’t be harmed considering “alien” viewpoints is not enough to motivate most of us to consider them seriously. We also must be motivated by an intellectual sense of justice. We must recognize an intellectual responsibility to be fair to views we oppose. We must feel obliged to hear them in their strongest form to ensure that we are not condemning them out of ignorance or bias on our part. At this point, we come full circle to where we began: the need for intellectual humility.