How can an Atheists support their view while also maintaining a morality?

atheists just dont belive in a magical, supreme being that can hear the whisper of all people around the world, the way Sta claus was portrayed to be the christmas guy who can give gifts to children all over the world. Atheists are not barbarians with no sense of morality.(but some believers like radical moslems forget morality for their supreme being) Atheists just dont believe on the magical things you believers ociate to your magical supreme being...