On religion in particular the time appears to me to have come when it is the duty of all who, being qualified in point of knowledge, have on mature consideration satisfied themselves that the current opinions are not only false but hurtful, to make their dissent known; at least, if they are among those whose station or reputation gives their opinion a chance of being attended to.

Such an avowal would put an end, at once and for ever, to the vulgar prejudice, that what is called, very improperly, unbelief, is connected with any bad qualities either of mind or heart.

The world would be astonished if it knew how great a proportion of its brightest ornaments—of those most distinguished even in popular estimation for wisdom and virtue—are complete sceptics in religion; many of them refraining from avowal, less from personal considerations than from a conscientious, though now in my opinion a most mistaken, apprehension, lest by speaking out what would tend to weaken existing beliefs, and by consequence (as they suppose) existing restraints, they should do harm instead of good.

John Stuart Mill (1873)