People are not stupid. They believe things for reasons. The last way for skeptics to get the attention of bright, curious, intelligent people is to belittle or condescend or to show arrogance toward their beliefs.
If anyone spends almost the whole day in reading...he gradually loses the capacity for thinking...This is the case with many learned persons; they have read themselves stupid
As for the virtuous poor, one can pity them, of course, but one cannot possibly admire them. They have made private terms with the enemy, and sold their birthright for very bad pottage. They must also be extraordinarily stupid.
Morality makes stupid.- Custom represents the experiences of men of earlier times as to what they supposed useful and harmful - but the sense for custom (morality) applies, not to these experiences as such, but to the age, the sanctity, the indiscussability of the custom. And so this feeling is a hindrance to the acquisition of new experiences and the correction of customs: that is to say, morality is a hindrance to the development of new and better customs: it makes stupid.
Alice had got so much into the way of expecting nothing but out-of-the-way things to happen, that it seemed quite dull and stupid for life to go on in the common way.
When a thing is said to be not worth refuting you may be sure that either it is flagrantly stupid - in which case all comment is superfluous - or it is something formidable, the very crux of the problem.
There are huge advertising budgets only when there's no difference between the products. If the products really were different, people would buy the one that's better. Advertising teaches people not to trust their judgment. Advertising teaches people to be stupid.