Some atheists believe in ghosts. Some atheists don't. The difference, you will say, is that the existence of ghosts implies the existence of an eternal soul; and the existence of an eternal soul implies the existence of God. read more
Atheists do not believe God or gods exist, but beyond that, just about every other belief is probably held by some atheists and not others. Atheism is not a worldview, it is not a theory of life or morality, and there are no shared beliefs, customs, or anything else, other than a lack of belief in God. read more
actualy many athiests such as myself consider atheism not denying the existince of god(s) but completely lacking belief in god(s), but anything other than that such as ghosts, paranormal activity, demons, boogeymen unicorns etc is individualy chosen by that one person what to believe in or lack (not deny but lack) belief for. read more