Complex sentence: Ghosts in Vietnam are known to take on many forms and do not fit into one category, they can be, "pleasant and feared, harmless and dangerous, moral creatures and unhappy suicides, male and female, human and un-human".
Split into simpler sentences: Ghosts in Vietnam are known to take on many forms and do not fit into one category. They can be, "pleasant and feared, harmless and dangerous, moral creatures and unhappy suicides, male and female, human and un-human".