By "superhuman authority", I'm assuming that Einstein means God. I believe that ethics and morals should remain secular. If morality came from God, then it would not be acting morally, it would just be obedience. To be moral means to do the right thing, even if it was not what you were told.
Ethics evolved along with our brains and human evolution as a social animal which have developed into what some humans call a set of Morals, but really Morals are only an objective view of Ethics, from deluded minds. Essentially Morality does not exist and the reality is that we are all bound by humanistic ethics of a species of animal that is somewhere between a Tournament Species and a Pair Bonding species, thus we have a mix of Monogamous and Polygamous cultures, Monotheistic and Polytheistic belief systems and the only key to harmony is Secularist Humanism.
The one who created us ,who makes the rivers flow,who makes the plants grow ,how can anything happen without his permission. He has planned everything in advance.Even our virtues and our morals are due to him .God alters the situations and we grow according to the situation.
A child whose parents if die at an age when he is just one year ,how can we expect that child to morally wise and who is actually responsible for it?
Isn't it the god?