It will become easier and more convincing for any Satanist to combine Jewish lineage with a Nazi aesthetic, and with pride rather than with guilt and… - Anton LaVey

The truth alone has never set anyone free. It is only doubt which will bring mental emancipation. Without the wonderful element of doubt, the doorway through which truth passes would be tightly shut, impervious to the most strenuous poundings of a thousand Lucifers.

SATANISM encourages its followers to indulge in their natural desires. Only by so doing can you be a completely satisfied person with no frustrations which can be harmful to yourself and others around you. Therefore, the most simplified description of the Satanic belief is:
INDULGENCE INSTEAD OF ABSTINENCE

"Anyone who says "we must try to understand" those who make life miserable for those undeserving of misery is abiding and abetting a social cancer!"