Translate the following English sentence to French:
"I feel therefore that extending and enriching European citizens' participation in culture is a crucial task, one which justifies the efforts we make to achieve it, and this is the yardstick against which we must measure the success of our programme and of our Union."
Élargir et enrichir la participation des citoyens européens à la culture me paraît donc une tâche essentielle qui justifie nos efforts et à l' aune de laquelle nous devons mesurer le succès de notre action et celui de notre Union.