“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.”

"Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.”

“It is precisely this collision of immoral power with powerless morality which constitutes the major crisis of our times.”

“And I say to you this morning, that if you have never found something so dear and so precious to you that you will die for it, then you aren't fit to live. You may be 38 years old as I happen to be, and one day some great opportunity stands before you and calls upon you to stand up for some great principle, some great issue, some great cause--and you refuse to do it because you are afraid; you refuse to do it because you want to live longer; you're afraid that you will lose your job, or you're afraid that you will be criticized or that you will lose your popularity or you're afraid that somebody will stab you or shoot at you or bomb your house, and so you refuse to take the stand. Well you may go on and live until you are 90, but you're just as dead at 38 as you would be at 90! And the cessation of breathing in your life is but the belated announcement of an earlier death of the spirit. You died when you refused to stand up for right, you died when you refused to stand up for truth, you died when you refused to stand up for justice.”

“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.”

“Nonviolence is a powerful and just weapon. It is a weapon unique in history, which cuts without wounding and ennobles the man who wields it.”

“Please be peaceful. We believe in law and order. We are not advocating violence, I want you to love your enemies... for what we are doing is right, what we are doing is just -- and God is with us.”

“An unjust law is a human law that is not rooted in eternal law and natural law. Any law that uplifts human personality is just. Any law that degrades human personality is unjust.”

“Lightning makes no sound until it strikes.” 

“We all too often have socialism for the rich and rugged free market capitalism for the poor.”

“Ten thousand fools proclaim themselves into obscurity, while one wise man forgets himself into immortality.”

“«La oscuridad no puede conducirte fuera de la oscuridad: sólo la luz puede hacer eso. El odio no puede conducirte fuera del odio; sólo el amor puede hacer eso»”

“Let us realize the arc of the moral universe is long but it bends toward justice.”

“The greatest purveyor of violence in the world : My own Government, I can not be Silent.”

“I have a dream that one day this nation will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident, that all men are created equal." I have a dream that one day on the red hills of Georgia, the sons of former slaves and the sons of former slave owners will be able to sit down together at the table of brotherhood. I have a dream that one day even the state of Mississippi, a state sweltering with the heat of injustice, sweltering with the heat of oppression, will be transformed into an oasis of freedom and justice. I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character. I have a dream today! I have a dream that one day, down in Alabama, with its vicious racists, with its governor having his lips dripping with the words of "interposition" and "nullification" -- one day right there in Alabama little black boys and black girls will be able to join hands with little white boys and white girls as sisters and brothers. I have a dream today! I have a dream that one day every valley shall be exalted, and every hill and mountain shall be made low, the rough places will be made plain, and the crooked places will be made straight; "and the glory of the Lord shall be revealed and all flesh shall see it together.”