Somethings change only very slowly. Such things are worth studying very closely:
"In De Bello Gallico (58 BC), Julius Caesar provides his audience with a picture of Germanic peoples lifestyle and culture: He depicts the Germans as primitive hunter gatherers with diets mostly consisting of meat and dairy products who only celebrate earthly gods such as the sun, fire, and the moon. German women reportedly wear small cloaks of deer hides and bathe in the river naked with their fellow men, yet their culture celebrates men who abstain from sex for as long as possible."
