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“One small step for man, one giant leap for mankind”: meaning and origin

Author: Anastasiia SokurFounder of Slay School, English teacher

“One small step for man, one giant leap for mankind” is what Neil Armstrong said as he stepped onto the Moon in July 1969. It means that one person’s small action can open up huge progress for everyone.

What does “One small step for man, one giant leap for mankind” mean?

Word for word, it says “one small step for man, one giant leap for mankind”. The sentence means that a modest action by one person can become a major achievement for all people. Two ideas work together here:

  • a small step — a modest, careful move forward, a first action;
  • a giant leap — a huge, sudden breakthrough.

Armstrong was describing the Apollo 11 mission, but today the phrase is used much more widely: for any new step in a big project.

  • one small stepA modest first move. It sounds humble, not boastful.
  • a giant leap forwardA huge breakthrough. “A giant leap” is usually followed by “forward”.
  • for mankindFor all people. “Mankind” is a noun with no article; “humankind” is a more neutral alternative.
  • for manFor humans in general. “For a man” means one particular person, so the article changes the meaning.
  • by leaps and boundsVery fast, in big steps (about progress): “The city has grown by leaps and bounds.”
  • The Eagle has landed.The lunar module Eagle is down. This is Present Perfect: the result matters now.

Pronounce “leap” with a long vowel, /liːp/, not the short vowel of “lip”. Put the stress in “mankind” on the second syllable: /mænˈkaɪnd/.

Where the quote comes from: Apollo 11 and the missing “a”

On 20 July 1969, Neil Armstrong and Buzz Aldrin landed the lunar module Eagle in an area named Tranquility Base. The first words sent from the Moon were “Houston, Tranquility Base here. The Eagle has landed.” Armstrong stepped onto the surface a few hours later and said the famous line as he did.

The debate is about one word. Armstrong later said he meant to say “for a man”, meaning one person’s own step. But on the recording the “a” is barely audible, so many people hear and print “for man”. Without the article, the line sounds like “for humankind”, which is why it is still discussed. For more on how articles work, see our guide to a, an, the.

How people use it today

People quote it on anniversaries of space flights, in articles about science and in speeches about big achievements. In conversation you can use it seriously or as a joke: “It’s a small step for me, but a giant leap for my confidence.” The joke works because almost everyone knows the original.

If you like short famous lines, compare it with To be, or not to be: that one is about a choice, while this one is about action.

Check yourself

Complete the quote or translate, then reveal the answer:

  1. 1.Fill in the gaps: One small step for ___, one giant leap for ___.

    Answer

    man, mankind

  2. 2.How do you say “very fast, in big steps” about progress?

    Answer

    by leaps and bounds

  3. 3.What is the difference between “for a man” and “for man”?

    Answer

    “For a man” means one person; “for man” means humankind in general.

  4. 4.How do you say «Орел приземлився» (the Eagle landed) in English?

    Answer

    The Eagle has landed.

Want to talk about small steps and big ones in English with confidence? Book a free trial lesson, and browse our free English resources for practice between lessons.

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