Neil Armstrong was the first person to walk on the moon on July 20, 1969. As he stepped onto the lunar surface, he famously said "That's one small step for man, one giant leap for mankind," a phrase that has endured as one of the most iconic quotes in history to describe the enormity of the achievement of the Apollo 11 mission. The video shows a brief clip of Armstrong's first steps on the moon with his famous quote overlayed on the footage.