[tortoise]

Cool article. I always took Zoroasterianism to be a fairly sane religion as such things go, and with many ideas that would be very familiar to most modern monotheistic religions. As the article points out, nobody really knows precisely how old the religion is, but it is one of the older religions currently practiced and easily pre-dating both Christianity and Islam by a wide margin.

[Cronos]

Actually speaking, Buddhism, or rather pure Buddhism is not polytheistic, rather it doesn't believe in the Gods and it is older than Christianity by 700 years.