Sigmund Freud - Totem and Taboo [Kindle azw3]

PRIMITIVE man is known to us by the stages of development through which he has passed: that is, through the inanimate monuments and implements which he has left behind for us, through our knowledge of his art, his religion and his attitude towards life, which we have received either directly or through the medium of legends, myths and fairy tales; and through the remnants of his ways of thinking that survive in our own manners and customs. Moreover, in a certain sense he is still our contemporary: there are people whom we still consider more closely related to primitive man than to ourselves, in whom we therefore recognize the direct descendants and representatives of earlier man. We can thus judge the so-called savage and semi-savage races; their psychic life assumes a peculiar interest for us, for we can recognize in their psychic life a well-preserved, early stage of our own development.