I used to believe J. S. Mill’s idea in On Liberty that there is no way "we can be sure that the opinion we are endeavouring to stifle is a false opinion." Instead, we must let the so-called marketplace of ideas decide. But that is a delusion and based on the deluded liberal view of human nature. Truth does not necessarily win out among men. Pride, greed and lust, for example, often make false ideas far more appealing than true ones. Even among the angels, truth wasn’t enough: a third still fell, knowing with certainty they were rejecting Truth Himself for eternity. And man is no angel.
Should paedophilia be promoted in schools? How about Satanism? Maybe they’re true, says Mill.