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Where this quote comes from

“Darkness cannot drive out darkness; only light can do that”

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The line comes from “Loving Your Enemies,” a sermon published in King’s 1963 book Strength to Love: “Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that.” The transcript of the 1957 sermon on which it’s based doesn’t contain the line, and in 1967 he said a slightly different version.

It started as a rougher sermon

King preached “Loving Your Enemies” at Dexter Avenue Baptist Church in Montgomery on 17 November 1957. The King Papers Project has a transcript, and the famous line isn’t in it. From the pulpit he made the point in looser words:

…hate for hate only intensifies the existence of hate and evil in the universe. If I hit you and you hit me and I hit you back and you hit me back and go on, you see, that goes on ad infinitum.

When he revised the sermon for Strength to Love (1963), the idea became the balanced pair of sentences people know now. So date the line to 1963, not 1957.

The 1967 version

Ten years later, speaking to the Southern Christian Leadership Conference in Atlanta on 16 August 1967, he used it again in slightly different words: “Darkness cannot put out darkness; only light can do that” (King Institute). In the same speech he said he had “decided to stick with love.”

What he meant

The sermon is about the hardest commandment in the Gospels, to love your enemies, and King treats it as practical advice. Returning hate only adds more of it, the way adding darkness can’t produce light. See more of his quotes on love.

How to cite it

The page number depends on the edition, so check the copy you’re using.

  • MLA: King, Martin Luther, Jr. “Loving Your Enemies.” Strength to Love, Harper & Row, 1963.
  • APA: King, M. L., Jr. (1963). Loving your enemies. In Strength to love. Harper & Row.

Related quote images

Quote image: “Darkness cannot drive out darkness; only light can do that.” Martin Luther King Jr., Strength to Love, 1963.

“Darkness cannot drive out darkness; only light can do that.”

Strength to Love, 1963

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Quote image: “Darkness cannot drive out darkness; only light can do that.” Martin Luther King Jr., Strength to Love, 1963.

“Darkness cannot drive out darkness; only light can do that.”

Strength to Love, 1963

Save
Quote image: “I have also decided to stick with love, for I know that love is ultimately the only answer to mankind's problems.” Martin Luther King Jr., Where Do We Go From Here? (SCLC address), Atlanta, 1967.

“I have also decided to stick with love, for I know that love is ultimately the only answer to mankind's problems.”

Where Do We Go From Here? (SCLC address), Atlanta, 1967

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Frequently asked questions

Where does “Darkness cannot drive out darkness” come from?

From the sermon “Loving Your Enemies” in Strength to Love (1963), a collection of King’s sermons.

Did King say it in a speech?

A version of it. On 16 August 1967, addressing the Southern Christian Leadership Conference in Atlanta, he said “Darkness cannot put out darkness; only light can do that” (King Institute text).

Is “I mourn the loss of thousands of precious lives” an MLK quote?

No. That sentence spread as King’s in May 2011, after Osama bin Laden was killed. It was written by someone else as an introduction to a genuine King quotation, and the attribution got mixed up as the post was copied.

How this page was made: written with AI assistance from the primary sources listed on our sources page.Every quotation and fact was checked against those sources by Maddy on 6 October 2026. How we verify · Last updated 6 October 2026