“The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race;

posterity as well as the existing generation; those who dissent from the opinion, still more than those who hold it.  If the opinion is right, they are deprived of the opportunity of exchanging error for truth:  if wrong, they lose, what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error. “

~John Stuart Mill, On Liberty, 1859, English, economist, philosopher, writer