There is not a line in 'The Wealth of Nations' that is not still applicable to this day.

Had drugs been decriminalized, crack would never have been invented and there would today be fewer addicts... The ghettos would not be drug-and-crime-infested no-man's lands... Colombia, Bolivia and Peru would not be suffering from narco-terror, and we would not be distorting our foreign policy because of it.

I think a major reason why intellectuals tend to move towards collectivism is that the collectivist answer is a simple one. If there's something wrong, pass a law and do something about it.

Legalizing drugs would simultaneously reduce the amount of crime and raise the quality of law enforcement. Can you conceive of any other measure that would accomplish so much to promote law and order?

Rapid increases in the quantity of money produce inflation. Sharp decreases produce depression.

The great advances of civilization, whether in architecture or painting, in science or literature, in industry or agriculture, have never come from centralized government.

The price works so well, so efficiently, that we are not aware of it most of the time.