On page 24 of On Liberty and the Subjection of Women by John Stuart Mills, he says “To refuse a hearing to an opinion, because they are sure that it is false, is to assume that their certainty is the same think as absolute certainty.”
In this statement, Mills is talking about how no one knows for absolute certainty that their opinion is the right one. If someone is refusing to hear an alternate idea or opinion, based solely on the fact that they think is it wrong, is to deny the person of their own thought. If you refuse for this reason, you make making the impression that you think that you have all knowledge of that subject and that your opinion is the only right one. My question is, can anyone be absolutely certain about anything? Is it possible to know that your opinion is the ultimate truth?