"If there is a dividing line between liberty and license, it is where freedom of speech is no longer respected as a procedure of the truth and becomes the unrestricted right to exploit the ignorance, and to incite the passions, of the people. Then freedom is such a hullabaloo of sophistry, propaganda, special pleading, lobbying, and salesmanship that it is difficult to remember why freedom of speech is worth the pain and trouble of defending it."

"There is no more right to deceive than there is a right to swindle, to cheat, or to pick pockets...when genuine debate is lacking, freedom of speech does not work as it is meant to work. It has lost the principle which regulates it and justifies it -- that is to say, dialectic conducted according to logic and the rules of evidence. If there is no effective debate, the unrestricted right to speak will unloose so many propagandists, procurers, and panderers upon the public that sooner or later in self-defense the people will turn to the censors to protect them."