Maybe pain and pleasure resulting from emotions/psychological sources? Pain and pleasure are pretty essential for creatures to not do the bad things and to do the good things for the survival of their species. Otherwise, they die of hunger or get permanently maimed without even realizing it.
Maybe pain and pleasure resulting from emotions/psychological sources? Pain and pleasure are pretty essential for creatures to not do the bad things and to do the good things for the survival of their species. Otherwise, they die of hunger or get permanently maimed without even realizing it.