Agree to disagree, Everyone is Entitled to their Opinions and Beliefs, Keep an Open Mind.
Now in practice, we all accept these notions on some level as part and parcel with living in a democracy, sometimes grudgingly
Anyone is free to challenge them, good luck doing so in the public sphere, hopefully you’ll have the truth in hand when you do, and be sure to thank the rest of us for giving you space for which to find it.
Now, this line of thought means at its best, and hopefully, truth rises to the surface of a democracy, and we can see it. At its worst, we have to continually tolerate conspiracy theorists, fringe politics, pseudosciences, etc.,because many a truths once started out in this fashion, and many a lie has had the luxury of not.
But schizophrenics challenge these basic tenets by existing, by pushing them to the absolute extreme.
The claims of the schizophrenic force us to say, no, we cannot merely agree to disagree, or entitle everyone to their opinions and beliefs, or keep an open mind.
Which is not so bad really, because it means truth actually exists, and there are some sane people out there hiding it from the rest of us.