As far as I'm aware solipsism only has a core tenet that nothing but you exists. That is certainly how I was introduced to it when I studied it in class and the only real overarching principle I could find when reading different viewpoints on it.
That said, unless you believe your mind can evaluate what is true it has to be (as far as I can tell) a faith-based stance. That isn't much different from a religious world-view, except there's not a higher power. There's only you.
That said, unless you believe your mind can evaluate what is true it has to be (as far as I can tell) a faith-based stance. That isn't much different from a religious world-view, except there's not a higher power. There's only you.