> we can’t agree on a shared ethical framework among ourselves
The Golden Rule: the principle of treating others as you would like to be treated yourself. It is a fundamental ethical guideline found in many religions and philosophies throughout history so there is already a huge consensus across time and cultures around it.
I never found anyone successfully argue against it.
PS: the sociopath argument is not valid, since it's just an outlier. Every rule has it's exceptions that need to be kept in check. Even though sometimes I think maybe the state of the world attests to the fact that the majority of us didn't successfully keep the sociopathic outliers in check.