These propositions may seem mild

The scepticism that I advocate amounts only to this: (1) that when the experts are agreed, the opposite opinion cannot be held to be certain; (2) that when they are not agreed, no opinion can be regarded as certain by a non-expert; and (3) that when they all hold that no sufficient grounds for a positive opinion exist, the ordinary man would do well to suspend his judgment.
These propositions may seem mild, yet, if accepted, they would absolutely revolutionize human life.
The opinions for which people are willing to fight and persecute all belong to one of the three classes which this scepticism condemns. When there are rational grounds for an opinion, people are content to set them forth and wait for them to operate. In such cases, people do not hold their opinions with passion; they hold them calmly, and set forth their reasons quietly. The opinions that are held with passion are always those for which no good ground exists; indeed the passion is the measure of the holder's lack of rational conviction. Opinions in politics and religion are almost always held passionately. Except in China, a man is thought a poor creature unless he has strong opinions on such matters; people hate sceptics far more than they hate the passionate advocates of opinions hostile to their own. It is thought that the claims of practical life demand opinions on such questions, and that, if we became more rational, social existence would be impossible. I believe the opposite of this, and will try to make it clear why I have this belief.
Take the question of unemployment in the years after 1920. One party held that it was due to the wickedness of trade unions, another that it was due to the confusion on the Continent. A third party, while admitting that these causes played a part, attributed most of the trouble to the policy of the Bank of England in trying to increase the value of the pound sterling. This third party, I am given to understand, contained most of the experts, but no one else. Politicians do not find any attractions in a view which does not lend itself to party declamation, and ordinary mortals prefer views which attribute misfortune to the machinations of their enemies. Consequently people fight for and against quite irrelevant measures, while the few who have a rational opinion are not listened to because they do not minister to any one's passions. To produce converts, it would have been necessary to persuade people that the Bank of England is wicked. To convert Labour, it would have been necessary to show that directors of the Bank of England are hostile to trade unionism; to convert the Bishop of London, it would have been necessary to show that they are "immoral." It would be thought to follow that their views on currency are mistaken.

On the value of scepticism [fragment]
uit: Sceptical essays - Bertrand Russell


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