Hi! I think this quote can be considered from different points of view:

1. From the point of view of a tourist, a traveler, when a person must respect the places he visits. And every man must make efforts to ensure that those who will after him see not the ruins, but that the transient beauty which you want to admire again and again.
2. And from another point of view I would consider this quote in the sense that ending up some period in life, and making an important decision not to regret what was done and try to keep the world around.

Returning to the topic of tourism and travel, I can say that visiting in different places and understanding their significance, I look around to see if I have damaged something having been there. And whether we cleaned all the garbage with my friends when we go camping on nature or we travel by the company. Also I look that visitors in zoos don't feed animals