“Why is it that a dog's menstruation made her lighthearted and gay, while her own menstruation amde her squeamish? The answer seems simple to me: dogs were never expelled from Paradise. Karenin knew nothing about the duality of body and soul and had no concept of disgust. That is why Tereza felt so free and easy with him. (And that is why it is so dangerous to turn an animal into a machina animata, a cow into an automaton for production of milk. By so doing, man cuts the thread biding him to paradise and has nothing left to hold or comfort him on his flight through the emptiness of time.)” Milan KunderaTerezaKarenin Book:The Unbearable Lightness of Being Source: The Unbearable Lightness of Being