Lucifer is not Satan, but one could not exist without the other. Lucifer is the subjective experience of tripping on ambrosia harvested from other people, getting super smart because you've flooded your brain with neurotransmitters. Satan is the guys who harvest the drug, the guys who do the dirty work. A Luciferian is a guy in a suit at a university, a Satanist is the guy working across the street at a "pig farm". Different, but in business together.