The Four Noble Truths are beliefs that underly most of Buddhist epistemology. They are:
1. The nature of suffering : Birth, aging, illness and death are suffering, as is attachment and aversion.
2. The origin of suffering : craving for things we think will bring us pleasure.
3. The cessation of suffering : freedom from attachment and aversion.
4. The way leading to the cessation of suffering : The eightfold path includes right view, right intention, right speech, right action, right livlihood, right effort, right mindfulness and right concentration.
Buddhism, in my understanding, is nihilistic, and not monothestic, polytheistic, or panthestic.
JayR