There's also a third way. Stop thinking about humans as the recipient of our wealth and creativity and talk about the carrying capacity of human beings contributing to the future resources of the planet, rather than as blind and stupid consumers.
In other words, what we should be calculating is how much each person contributes to the future of the planet's resources over the amount they consume (Net Future Usefulness).
We have to stop being anthropocentric about the flow of wealth. Sustainability should be about what we can sustain, not what the planet can sustain, and we should always first and foremost be sustaining and increasing our grandchildren's resources (nurturing the soil, moderating wildlife and organisms, preventing ecosystem collapses), not letting everyone fanatically compete for favors from an Invisible Hand Job or an imaginary all-seeing Aristocrat at the top of a pyramid of dead bodies.