" There are general laws current in the world as to morality. 'Thou shalt not steal,' for instance. That has “necessarily been current as a law through all nations. But the first man you meet in the street will have ideas about theft so different from yours, that, if you knew them as you know your own, you would say that this law and yours were not even founded on the same principle. "

― Anthony Trollope , Phineas Finn (Palliser, #2)