Very crudely put, solipsism is the philosophical view that only I exist. I played around a bit with it in an earlier post, and I thought I’d do so a bit more before putting it back in the attic.
One interesting way to object to solipsism is on moral grounds. After all, if I believe that only I exist, this belief could result in me behaving badly. Assuming that the world exists, people commonly endeavor to lower the moral status of beings they wish to make the targets of their misdeeds. For example, men who want to mistreat women often work hard to cast them as inferior. As another example, people who want to mistreat animals typically convince themselves that animals are inferior beings and hence can be mistreated. Solipsism would seem to present the ultimate reduction: everything other than me is nothing, which is presumably as “low” as it goes (unless there is some sort of negative or anti-existence). If I were to truly believe that other people and animals merely “exist” in my mind, then my treatment of them would seem to not matter at all. Since no one else exists, I cannot commit murder. Since the world is mine, I cannot commit theft. As might be imagined, such believes could open the door to wicked behavior.
One obvious reply is that if solipsism is true, then this would not be a problem. After all, acting badly towards others is only a problem if there are, in fact, others to act badly towards. If solipsism is true, what I do in the “real” world would seem to have no more moral significance than what I do in dreams or in video games. As such, it can be contended that the moral problem is only a problem if one believes that solipsism is false.
However, it can also be contended that the possibility that solipsism is wrong should be taken into account. That is, while I cannot disprove solipsism, I also cannot prove it. As such, the people I encounter might, in fact, be people. As such, the possibility that they are actually people should be enough to require that I act as if they are people in terms of how I treat them. As such, my skepticism about my solipsism would seem to lead me to act morally, even though it is possible that there is no one else to act morally towards. This, obviously enough, is analogous in some ways to concerns about the treatment of certain animals as well as the ethical matter of abortion. If I accept a principle that entities that might be people should be treated as people, this would seem to have some interesting implications. Of course, it could be argued that the possible people need to show the qualities that actual people would have if they existed as people.
It can also be contended that even if solipsism were true, my actions would still have moral significance. That is, I could still act in right or wrong ways. One way to consider ethics in the context of solipsism is to consider ethics in the case of video games. Some years back I wrote “Saving Dogmeat” which addresses a similar concern, namely whether or not one can be good or bad in regards to video game characters. One way to look at solipsism is that the world is a video game that has one player, namely me.
One obvious way to develop this would be to develop a variant of Kantian ethics. While there would be no other rational beings, the Kantian view that only the good will is good would seem to allow for ethics in solipsism. While my willing could have no consequences for other beings (since there are none) I could presumably still will the good. Another way to do this is by using a modified version of virtue theory. While there would be no right or wrong targets of my feelings and actions (other than myself), there would still seem to be a way to discuss excess and deficiency. There are, of course, numerous other theories that could be modified for a world that is me. For example, utilitarianism would still work, although the only morally relevant being would be me. However, my actions could make me unhappy or happy even though they are directed “towards” the contents of my own mind. For example, engaging in “kindness” could make me happier than engaging in “cruelty.” Of course, this might be better seen as a form of ethical egoism in the purest possible sense (being the only being, I would seem to be the only being that matters-assuming any being matters).
While this might seem a bit silly, solipsism does seem to provide an interesting context in which to discuss ethics. But, time to put solipsism back in the attic.