In 1985, Nono came across this aphorism ("Travellers, there are no trails – all there is, is travelling") on a wall of the Franciscan monastery near Toledo, Spain, and it played an important role in the rest of his compositions. As Andrew Clements writes about this aphorism in "The Guardian", "It seemed to the composer the perfect expression of his own creative development, and in the last three years of his life he composed a trilogy of works whose titles all derive from that inscription."