Translate the following English sentence to French:
"This is more than an economic challenge: it is a process of profound cultural change which must filter down to every family, every school, every company and every public authority."
Il ne s' agit pas simplement d' un défi économique, mais peut-être encore davantage d' un processus de mutation culturelle profonde qui touchera chaque famille, chaque école, chaque entreprise, chaque administration publique.