1960s, Letter from a Birmingham Jail (1963) 
Context: But though I was initially disappointed at being categorized as an extremist, as I continued to think about the matter I gradually gained a measure of satisfaction from the label. Was not Jesus an extremist for love: "Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you." Was not Amos an extremist for justice: "Let justice roll down like waters and righteousness like an ever flowing stream." Was not Paul an extremist for the Christian gospel: "I bear in my body the marks of the Lord Jesus." Was not Martin Luther an extremist: "Here I stand; I cannot do otherwise, so help me God." And John Bunyan: "I will stay in jail to the end of my days before I make a butchery of my conscience." And Abraham Lincoln: "This nation cannot survive half slave and half free." And Thomas Jefferson: "We hold these truths to be self evident, that all men are created equal..." So the question is not whether we will be extremists, but what kind of extremists we will be. Will we be extremists for hate or for love? Will we be extremists for the preservation of injustice or for the extension of justice? In that dramatic scene on Calvary's hill three men were crucified. We must never forget that all three were crucified for the same crime — the crime of extremism. Two were extremists for immorality, and thus fell below their environment. The other, Jesus Christ, was an extremist for love, truth and goodness, and thereby rose above his environment. Perhaps the South, the nation and the world are in dire need of creative extremists.
                                    
“He [Jesus] not only forbids actual uncleanness, but all irregular desires, upon pain of hell-fire; causeless divorces; swearing in conversation, as well as forswearing in judgment; revenge; retaliation; ostentation of charity, of devotion, and of fasting; repetitions in prayer, covetousness, worldly care, censoriousness: and on the other side commands loving our enemies, doing good to those that hate us, blessing those that curse us, praying for those that despitefully use us; patience and meekness under injuries, forgiveness, liberality, compassion: and closes all; his particular injunctions, with this general golden rule, Matt. VII. 12, "All things whatsoever ye would that men should do to you, do you even so to them, for this is the law and the prophets." And to show how much He is in earnest, and expects obedience to these laws, He tells them, Luke VI. 35, That if they obey, " great shall be their reward."”
            § 116 
The Reasonableness of Christianity (1695)
        
Help us to complete the source, original and additional information
John Locke 144
English philosopher and physician 1632–1704Related quotes
"Rossa's Recollections 1838 to 1898: Memoirs of an Irish Revolutionary", p. 232
                                        
                                        Attributed in 1861, as quoted in  The Life of Abraham Lincoln: Drawn from Original Sources https://books.google.com/books?id=3WMDAAAAYAAJ&pg=PA124&dq=%22What+must+he+think+of+us%22 (1900), Volume 3, New York: Lincoln History Society, p. 124 
Posthumous attributions
                                    
“The eyes of all America are upon us, as we play our part in posterity will bless or curse us.”
Knox on the Declaration of Independence. Reported in David McCullough, 1776 (2005), p. 83.
My Reviewers Reviewed (lecture from June 27, 1877, San Francisco, CA)
“Well, pray if you like, only you'd do better to use your judgment.”
Source: War and Peace
Source: Discipleship (1937), The Enemy, the "Extraordinary", pp. 147-148.
                                        
                                        1950s, Loving Your Enemies (Christmas 1957) 
Context: Jesus is eternally right. History is replete with the bleached bones of nations that refused to listen to him. May we in the twentieth century hear and follow his words-before it is too late. May we solemnly realize that we shall never be true sons of our heavenly Father until we love our enemies and pray for those who persecute us.