One small step. One giant leap.
That's one small step for man, one giant leap for mankind Meaning Neil Armstrong's words on first setting foot on the moon, in 1969. A strong contender as the most famous line ever to have been uttered. Origin One small step Armstrong's words are sometimes given as, "That's one small step for man, one giant leap for mankind." Clearly the event was of huge significance and the choice of words was quite deliberate. Armstrong maintained for some time later that he said "for a man" rather than "for man".