Abstract: Rather than thinking about female religiosity from the twelfth to the fourteenth centuries in terms of orthodoxy and heresy and a masculine-feminine opposition, we should consider it as a dialogue. In the ecclesiastical principality of Liège, the mystic Hadewijch (thirteenth century) responded to William of Saint-Thierry (twelfth century). Hadewijch’s celebrated Seventh Vision, about the union with Christ, is almost incomprehensible. However, looking at it in relation to the theological thought of her predecessor’s Meditations sheds new light on this obscure text.