Greta wrote: ↑February 26th, 2020, 10:11 pm
There can be no universal goals when different parties have different interests.
Sure there can. People have many goals, and though most of them will differ from person to person, there may still be one shared by all (not likely in a large group, but possible).
But that is a minor logical point. For moral theories and systems, as the subject matter of interest to moral philosophers, there indeed must be agreement as to what the aim, the goal, of moral philosophy is --- what it seeks to accomplish, just as, by comparison, a theory of gravity seeks to explain, and enable us to predict, the trajectories of moving bodies, the orbits of the planets, the tides, etc. A physicist who did not share that goal would not be much interested in theories of gravity.
There is and has been, I think, a near-universal consensus among moral philosophers that the broad aim of the discipline is to improve human welfare, human well-being, particularly as that is affected by interactions between moral agents. That is, moral philosophy has been concerned with how people treat one another; with developing principles and rules governing those interactions, with the aim of improving well-being for all. Moreover, being philosophers (as opposed to shamans, soothsayers, sophists, "holy men," autocrats, etc.) there is a consensus that those principles and rules should be universal --- applicable to all moral agents in a social setting --- and be rationally defensible.
So, yes, someone who did not share that goal or that methodology might have a very different idea as to what what "morality" is and what it entails. Not many moral philosophers, however, would be much interested in that person's views.