Thanks for another thoughtful blog! The Orphics not wanting to be reincarnated reminds me of Buddhism. Buddhists strive for enlightenment, a state of spiritual liberation that is free from craving, aversion and ignorance. A Buddhist who achieves that "Nirvana" will not reincarnate. I think Buddhisms origins date back to the 7th century BC, around the same time Hesiod lived. Perhaps these ideas all spread from an Egyptian source.