"I associated it [the word 'Hourloupe', as title of his longest series of work he made exclusively from 1962 to 1974] by assonance with 'hurler' (to shout), hululer (to howl), loup, (wolf), 'Riquet à la Houppe' and the title of Maupassant's book ‘Le Horla’, inspired by mental distraction."
January 1, 1970
https://en.wikiquote.org/wiki/Jean_Dubuffet