For future generations to fulfill the hopes of the modern generation, it's crucial for the modern generation itself to respect the aspirations of the past.
The main criterion for human values, by which their hierarchy and importance are determined, should be some integrated supreme value embodying the "ideal life of humanity." Such is arguably the "complete well-being and flourishing of humanity."
One of Jupiter's satellites is called Ganymede. If it were to fall onto Jupiter and disappear, what would be the loss for humanity? This is what world politics should sometimes ponder.