Longtermism is an emerging school of thought according to which approaches to improving the world should be evaluated mainly in terms of their potential long-term impact, over thousands, millions, or even billions of years.

In other words, the question “How can I have a positive impact?” should mostly be replaced with “How can I best make the very long-term future go well?”

We think future generations clearly matter, and impartial concern most likely implies their interests matter as much as anyone’s.