AP

On Aug. 28, 1963, the Rev. Martin Luther King Jr. delivered his “I Have a Dream” speech from the steps of the Lincoln Memorial.

This historic speech helped galvanize the Civil Rights Movement and brought the plight of the disenfranchised to a larger national and international audience.

In honor of that historic moment and in honor of Martin Luther King Jr. Day, we present the 15 best quotes from that speech in pictures.

Related: 'I Have a Dream' and other major events in civil rights history

"I say to you today, my friends, that in spite of the difficulties and frustrations of the moment, I still have a dream."

Martin Luther King, Jr.

I have a dream that one day right there in Alabama little black boys and little black girls will be able to join hands with little white boys and white girls as sisters and brothers.

Martin Luther King, Jr.

AP

"Now is the time to rise from the dark and desolate valley of segregation to the sunlit path of racial justice"

Martin Luther King, Jr.

"We will not be satisfied until justice rolls down like waters and righteousness like a mighty stream."

Martin Luther King, Jr.

"I have a dream that my four little children will one day live in a nation where they will not be judged by the colour of their skin but by the content of their character."

Martin Luther King, Jr.

"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."

Martin Luther King, Jr.

AP

"Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred."

Martin Luther King, Jr.

"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 a table of brotherhood."

Martin Luther King, Jr.

"The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges."

Martin Luther King, Jr.

AP

"Now is the time to make justice a reality for all of God's children."

Martin Luther King, Jr.

"We cannot walk alone. And as we walk, we must make the pledge that we shall march ahead. We cannot turn back."

Martin Luther King, Jr.

"Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood."

Martin Luther King, Jr.

AP

"We refuse to believe that the bank of justice is bankrupt."

Martin Luther King, Jr.

"In the process of gaining our rightful place we must not be guilty of wrongful deeds"

Martin Luther King, Jr.

AP

When we allow freedom to ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing in the words of the old Negro spiritual: "Free at last! Free at last! thank God Almighty, we are free at last!"

Martin Luther King, Jr.