The reality is that if you look at every program that the government has adopted in the direction of extending its scope, it took an enormous propaga… - Milton Friedman

The proper role of government is exactly what John Stuart Mill said in the middle of the 19th century in On Liberty. The proper role of government is to prevent other people from harming an individual. Government, he said, never has any right to interfere with an individual for that individual's own good. The case for is exactly as strong and as weak as the case for prohibiting people from overeating. We all know that overeating causes more deaths than drugs do. If it's in principle OK for the government to say you must not consume drugs because they'll do you harm, why isn't it all right to say you must not eat too much because you'll do harm? Why isn't it all right to say you must not try to go in for skydiving because you're likely to die? Why isn't it all right to say, "Oh, skiing, that's no good, that's a very dangerous sport, you'll hurt yourself"? Where do you draw the line?

Over the period covered by these data, a drastic change has occurred in the responsibilities undertaken by the state to provide assistance to the aged, unemployed and otherwise dependent. This change has had divergent results on the particular data under discussion. The availability of assistance from the state would clearly tend to reduce the need for private reserves and so to reduce private saving—it is equivalent, in terms of our hypothesis, to a reduction in the variance of transitory components.

Keynes was a great economist. In every discipline, progress comes from people who make hypotheses, most of which turn out to be wrong, but all of which ultimately point to the right answer. Now Keynes, in The General Theory of Employment, Interest and Money,set forth a hypothesis which was a beautiful one, and it really altered the shape of economics. But it turned out that it was a wrong hypothesis. That doesn't mean that he wasn't a great man!