"Arcana" is a word in ENGLISH

It would be an undoubted advantage if we were to leave God out altogether and honestly admit the purely human origin of all the regulations and precepts of civilization. Along with their pretended sanctity, these commandments and laws would lose their rigidity and unchangeableness as well. People could understand that they are made, not so much to rule them as, on the contrary, to serve their interests; and they would adopt a more friendly attitude to them, and instead of aiming at their abolition, would aim only at their improvement.