Moral Argument for Other Minds

        The following is a moral argument for the existence of other minds. If it is granted that we have a moral obligation to other people, then other minds must exist. Either we owe duties to our neighbors,or our moral obligations are fulfilled by our own wills. Something that must be done is either owed to someone else or ourselves. However, a person by their self cannot be the judge of their own cause, since if it is granted that a person can be a judge of their own cause, what is to keep them from willing the bad as a moral imperative? It is unacceptable that immoral imperatives should hold up. Thus, moral obligations are owed to our neighbors rather than ourselves, so that other minds exist.