Yesterday in Quaker Meeting, someone spoke about walking
El Camino de Santiago. He saw wagon-tracks that initially looked like they were in mud, but on inspection, turned out to be worn into the stone. He said they also saw trees that he says were planted over 1,000 years ago. He concluded, "What impact could I have on the world that could last 1,000 years?"
This question can lead in all sorts of interesting directions. During Meeting, I was thinking how living with that as a guiding principle is invariably a recipe for Doing Nothing at All or ego-driven tilting at windmills. And simultaneously, I think there is value in being forward thinking; and there isn't harm in occasionally dreaming about the far future, even if it is hubris.
When I mentioned the original question to
melted_snowball, he said nearly everyone's impact will be no more than the consumption of resources over their lifetime. This can be argued by looking at the number of people alive at any given time, and how relatively few people have an impact that we can see. (Right? Is that the best summary for that argument?)
My reaction was quite different. I say there are millions of effects we might not be able to directly attribute, but are still important. Granted, most of those effects couldn't be measured on the scale of a year or 100 years, let alone over the course of a millennium, but I say they exist. You might ask, "these effects are important in what way?" I would respond, either they're important to God; or they're just part of the bigger mystery. This is a common thread among mystics, I think, and one I can't find a good argument against.
At least, I think if one lives one's life as if any action could have an effect in a year, ten years, 100 years, it's good incentive toward wanting to be a better person.
I'd be fascinated to hear where this question leads you.