Mystics love God and though suspicious about theory as such, they do not shy away from reflection upon love’s mysteries. On the contrary, their writings often contain genuine ‘theories of love’. The works of Bernard of Clairvaux, Hadewijch, Ruusbroec, François de Sales, Madame Guyon, Thérèse de Lisieux or Simone Weil can all be read as such. Contemporary philosophical, theological, psychoanalytical and psychological theories of love often refer to love theories present in the mystical tradition.