Quote
"Has there ever been a society which has died of dissent? Several have died of conformity in our lifetime."
"The notion that truth is reached by the repression of dissent is the kind of claptrap that is believed—or at least implemented—by dictators and high school administrators."

Dissent is an opinion, philosophy or sentiment of non-agreement or opposition to a prevailing idea or policy enforced under the authority of a government, political party or other entity or individual. A dissenting person may be referred to as a dissenter.
"Has there ever been a society which has died of dissent? Several have died of conformity in our lifetime."
"There is one tradition in America I am proud to inherit. It is our first freedom and the truest expression of our Americanism: the ability to dissent without fear. It is our right to utter the words, "I disagree." We must feel at liberty to speak those words to our neighbors, our clergy, our educators, our news media, our lawmakers and, above all, to the one among us we elect President."
"All protestantism, even the most cold and passive, is a sort of dissent. But the religion most prevalent in our northern colonies is a refinement on the principles of resistance: it is the dissidence of dissent, and the protestantism of the Protestant religion."
"In a society where dissenting viewpoints are suppressed, those viewpoints are potent and dangerous... Where dissent is tolerated, it rapidly becomes quaint and is viewed as un-sophisticated; people merely amuse themselves with the expression of contrary opinion."
"Freedom of speech is useless without freedom of thought. And I fear that the politics of protest is shutting out the process of thought, so necessary to rational discussion. We are faced with the Ten Commandments of Protest: Thou Shalt Not Allow Thy Opponent to Speak. Thou Shalt Not Set Forth a Program of Thine Own. Thou Shalt Not Trust Anybody Over Thirty. Thou Shalt Not Honor Thy Father or Thy Mother. Thou Shalt Not Heed the Lessons of History. Thou Shalt Not Write Anything Longer than a Slogan. Thou Shalt Not Present a Negotiable Demand. Thou Shalt Not Accept Any Establishment Idea. Thou Shalt Not Revere Any but Totalitarian Heroes. Thou Shalt Not Ask Forgiveness for Thy Transgressions, Rather Thou Shalt Demand Amnesty for Them."
"Dissent is the mark of freedom."