Nature admits of no permanence in the relation between man and woman. It is only man's egoism that wants to keep woman like some buried treasure. All endeavors to introduce permanence in love, the most changeable thing in this changeable human existence, have gone shipwreck in spite of religious ceremonies, vows, and legalities.
Leopold von Sacher-Masoch (2015). “Venus in Furs”, p.29, Cosimo Classics