Humans ought to treat others as a human being would treat others. Never should they bully and abuse anyone. Since the ultimate goal of them is to let everyone become capable of living an appropriate and decent life, they must pay special attention to the worse-off people, while at the same time encouraging excellence and creativity, making every individual capable of fulfilling his own goal.(self-made)
Here I am speaking of a kind of universal ethic for human beings. I am using the pronouns they/them because I want to put myself in the position of a disinterested spectator. I am concerned that representing mankind with they/them might be inappropriate.