Epicurus
Reasonable
Top if you want a really crazy spiritual philosophy/lifestyle/religion you should check out the Grateful Dead Family. They hardcore members of that group are NUTS. Cypress likes to pretend to be one but I've seen some truly dedicated dudes. They are almost like monks in a way. They give up all their posessions, bank accounts, and families and just travel around the country living on the hospitality of other Deadheads around the country. There is an intensely spiritual side to it also. I've been to one of their Acid Rituals and it is some fucked up shit. It's kind of like a more intense, less religious version of rhasta with LSD instead of pot.