ABSTRACT
The peculiar evil of silencing the expression of 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 it is wrong, they lose what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error. 1
