"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 tho…"

"All errors which are likely to do harm, are the proper objects of animadversion, and may be justly censured."

"The liberty of the individual must be thus far limited; he must not make himself a nuisance to other people."

"The only security against error is in the discussion of every subject, and the careful examination of all arguments, by which it can be supported or opposed."

"Even despotism does not produce its worst effects, so long as individuality exists under it; and whatever crushes individuality is despotism, by whatever name it may be called, and whether it professe…"