They are Germany's best-known research couple: the cultural scientist Aleida Assmann and the Egyptologist Jan Assmann have each had remarkable careers. But together they are particularly strong - and have been married to each other for over 50 years. In a conversation with RNZ editor-in-chief Klaus Welzel, they talk about love (for science), cultural constructions and the question of whether humanity is in a position to learn from its history.