In «Tu écriras mon nom sur les eaux», published in 2019, Jean-François Haas proposes a reflection on the family based on two distinct models put in opposition. The first, limited and exclusive, corresponds to the archetype of the Swiss family at the beginning of the 20th century. Haas describes it extensively in the first part of his novel before breaking it up and proposing a more open and human counter-model based on fiction and the potentialities offered by literature. Playing on in-tertextuality and the use of personal pronouns, among other things, Haas lays the foundations of an ideal but illusory family model, encompassing humanity in its entirety. By constantly weaving links between different moments of the 20th cen-tury and the present of narration and writing, Jean-François Haas is also building a strong discourse on Switzerland, its institutions and conservatism.