“Let us be dissatisfied until America will no longer have high blood pressure of creeds and an anemia of deeds. Let us be dissatisfied until the tragic walls that separate the outer city of wealth and comfort from the inner city of poverty and despair shall be crushed by the battering rams of the fires of justice. Let us be dissatisfied until they who live on the outskirts of Hope are brought into the metropolis of daily security. Let us be dissatisfied until slums are cast into the junk heap of history and every family will live in a decent, sanitary home. Let us be dissatisfied until the dark yesterdays of segregated schools will be transformed into the bright tomorrows of quality integrated education.”

“Injustice anywhere is a threat to justice everywhere.”

“The day we see the truth and cease to speak is the day we begin to die”

There comes a time when one must take the position that is neither safe nor politic nor popular, but he must do it because conscience tells him it is right.”

“If you have not discovered something you are willing to die for, then you are not fit to live.”

“The question is not if we will be extremists, but what kind of extremists we will be. The nation and the world are in dire need of creative extremists.”

“Occasionally in life there are those moments of unutterable fulfillment which cannot be completely explained by those symbols called words. Their meanings can only be articulated by the inaudible language of the heart.”

“Lightning makes no sound until it strikes.” 

“Capitalism is always in danger of inspiring men to be more concerned about making a living than making a life. We are prone to judge success by the index of our salaries or the size of our automobiles, rather than by the quality of our service and relationship to humanity.”

“Take the first step in faith. You don't have to see the whole staircase, just take the first step.”

“He who passively accepts evil is as much involved in it as he who helps to perpetrate it. He who accepts evil without protesting against it is really cooperating with it.”

“noncooperation with evil is just as much a moral duty as is cooperation with good.”

“Something is happening in Memphis; something is happening in our world. And you know, if I were standing at the beginning of time, with the possibility of taking a kind of general and panoramic view of the whole of human history up to now, and the Almighty said to me, "Martin Luther King, which age would you like to live in?" I would take my mental flight by Egypt and I would watch God's children in their magnificent trek from the dark dungeons of Egypt through, or rather across the Red Sea, through the wilderness on toward the promised land. And in spite of its magnificence, I wouldn't stop there. I would move on by Greece and take my mind to Mount Olympus. And I would see Plato, Aristotle, Socrates, Euripides and Aristophanes assembled around the Parthenon. And I would watch them around the Parthenon as they discussed the great and eternal issues of reality. But I wouldn't stop there. I would go on, even to the great heyday of the Roman Empire. And I would see developments around there, through various emperors and leaders. But I wouldn't stop there. I would even come up to the day of the Renaissance, and get a quick picture of all that the Renaissance did for the cultural and aesthetic life of man. But I wouldn't stop there. I would even go by the way that the man for whom I am named had his habitat. And I would watch Martin Luther as he tacked his ninety-five theses on the door at the church of Wittenberg. But I wouldn't stop there. I would come on up even to 1863, and watch a vacillating President by the name of Abraham Lincoln finally come to the conclusion that he had to sign the Emancipation Proclamation. But I wouldn't stop there. I would even come up to the early thirties, and see a man grappling with the problems of the bankruptcy of his nation. And come with an eloquent cry that we have nothing to fear but "fear itself." But I wouldn't stop there.”

“Through our scientific and technological genius we've made of this world a neighborhood. And now through our moral and ethical commitment we must make of it a brotherhood. We must all learn to live together as brothers—or we will all perish together as fools.”