“The general limits of your freedom are merely these: that you do not trespass upon the equal rights of others.”

Part I : Declaration, Ch. IV : Mr. Spencer's Confusion as to Rights
A Perplexed Philosopher (1892)
Context: Men must have rights before they can have equal rights. Each man has a right to use the world because he is here and wants to use the world. The equality of this right is merely a limitation arising from the presence of others with like rights. Society, in other words, does not grant, and cannot equitably withhold from any individual, the right to the use of land. That right exists before society and independently of society, belonging at birth to each individual, and ceasing only with his death. Society itself has no original right to the use of land. What right it has with regard to the use of land is simply that which is derived from and is necessary to the determination of the rights of the individuals who compose it. That is to say, the function of society with regard to the use of land only begins where individual rights clash, and is to secure equality between these clashing rights of individuals.

[Noam, Cohen, The New York Times, Times Articles Removed From Google Results in Europe, October 3, 2014, http://www.nytimes.com/2014/10/04/business/media/times-articles-removed-from-google-results-in-europe.html, October 29, 2014]

2010s, Farewell Speech (2017)
Context: !-- So the young people here and the young people out there: --> Do not ever let anyone make you feel like you don't matter, or like you don't have a place in our American story — because you do. And you have a right to be exactly who you are.
But I also want to be very clear: This right isn't just handed to you. No, this right has to be earned every single day. You cannot take your freedoms for granted. Just like generations who have come before you, you have to do your part to preserve and protect those freedoms. And that starts right now, when you're young.
Right now, you need to be preparing yourself to add your voice to our national conversation. You need to prepare yourself to be informed and engaged as a citizen, to serve and to lead, to stand up for our proud American values and to honor them in your daily lives. And that means getting the best education possible so you can think critically, so you can express yourself clearly, so you can get a good job and support yourself and your family, so you can be a positive force in your communities.

Declaration of the Rights of Man (1789)

cited in «La destra si riconosca nell'antifascismo» http://www.corriere.it/politica/08_settembre_13/fini_antifascismo_ccb8bcec-8175-11dd-95db-00144f02aabc.shtml, Il Corriere della Sera, 13 September 2008).

Address on Latin American Policy before the Southern Commercial Congress http://books.google.com/books?id=_VYEIml1cAkC&q=%22You+cannot+be+friends+upon+any+other+terms+than+upon+the+terms+of+equality%22&pg=PA19#v=onepage Mobile, Alabama (27 October 1913)
1910s

Discourses on the Condition of the Great

Letter to Isaac H. Tiffany (4 April 1819)
1810s

[1] What do you worry most about? What are the causes of your worries? Can any of your worries be eliminated? How? Which of them might you deal with first? How do you decide? Are there other people with the same problems? How do you know? How can you find out?
[3] What bothers you most about adults? Why? How do you want to be similar or different from adults you know when you become an adult?
[4] What, if anything, seems to you to be worth dying for? How did you come to believe this? What seems worth living for? How did you come to believe this?
[5] At the present moment, what would you most like to be — or be able to do? Why? What would you have to know in order to be able to do it? What would you have to do in order to get to know it?
[8] When you hear or read or observe something, how do you know what it means? Where does meaning "come from"? What does "meaning" mean? How can you tell what something "is" or whether it is? Where do words come from? Where do symbols come from? Why do symbols change? Where does knowledge come from? What do you think are some of man's most important ideas? Where did they come from? Why? How? Now what? What's a "good idea"? How do you know when a good or live idea becomes a bad or dead idea? Which of man's ideas would we be better off forgetting? How do you decide? What is "progress"? What is "change"? What are the most obvious causes of change? What are the least apparent? What conditions are necessary in order for change to occur? What kinds of change are going on right now? Which are important? How are they similar or different from other changes that have occurred? What are the relationships between new ideas and change? Where do new ideas come from? How come? So what? If you wanted to stop one of the changes going on right now (pick one), how would you go about it? What consequences would you have to consider? Of the important changes going on in our society, which should be considered and which resisted? Why? How? What are the most important changes that have occurred in the past ten years? twenty years? fifty years? In the last year? In the last six months? Last month? What will be the most important changes next month? Next year? Next decade? How can you tell? So what? What would you change if you could? How might you go about it? Of those changes which are about to occur, which would you stop, if you could? Why? How? So what?
[9] Who do you think has the most important things to say today? To whom? How? Why? What are the dumbest and most dangerous ideas that are "popular" today? Why do you think so? Where did these ideas come from?
[10] What are the conditions necessary for life to survive? Plants? Animals? Humans? Which of these conditions are necessary for all life? Which ones for plants? Which ones for animals? Which ones for humans? What are the greatest threats to all forms of life? To plants? To animals? To humans? What are some of the strategies living things use to survive? Which are unique to plants? Which are unique to animals? Which are unique to humans? What kinds of human survival strategies are (1) similar to those of animals and plants? (2) different from animals and plants?
[11] What does man's language permit him to develop as survival strategies that animals cannot develop? How might man's survival strategies be different from what they are if he did not have languages? What other "languages" does man have besides those consisting of words? What functions do those languages serve? Why and how do they originate? Can you invent a new one? How might you start? What would happen, what difference would it make, what would man not be able to do if he had no number (mathematical) languages? How many symbol systems does man have? How come? So what? What are some good symbols? Some bad? What good symbols could we use that we do not have? What bad symbols do we have that we might be better without?
[12] What's worth knowing? How do you decide? What are some ways to go about getting to know what's worth knowing?
Teaching as a Subversive Activity (1969)