Armstrong's Footprint Legacy

Just attended the most enlightening lecture of the semester. It was about leadership. And he showed us this footprint at the end of the lecture:
This footprint is going to be there for centuries and millenniums. Maybe not the footprint physically, but the legacy that it had created. It is the same for the impact we have made when we were in leadership roles. We create a legacy of our own, and hope it they will have more positive effects then negative ones..