This line from Schindler's List always stuck with me:

“Whoever saves one life saves the world entire.”

The context is that at the end of the movie Schindler is distraught thinking of how many more he could have saved if he just did certain things differently, like selling a ring and using that money to hire another Jewish worker. One of the people he saved tells him the above line.

It's stuck with me for two reasons, I think.

First, it's an interesting perspective on individuality. Each person has their own unique perspective of the world. When that person dies, that perspective is gone forever. An entire universe dies with them, never to be seen again. I think that's a powerful way to view the individual.

Second, it's a reminder that we do what we can, and while it may be imperfect, it's enough. You can't save everyone, just live well and help those you can in the capacity that you can. If you save one of those people, you've saved the world.