What did Neil Armstrong say when he took his first step onto the moon?

When Neil Armstrong first stepped onto the moon on July 20, 1969, he famously said, "That's one small step for [a] man, one giant leap for mankind." This iconic phrase captured the significance of the moment, marking humanity's first steps on another celestial body. The addition of "a" in his statement was sometimes debated, but Armstrong later clarified that he intended to say it, emphasizing the individual human experience within the broader achievement.