Complex sentence: His poems became and remain very popular in the French-speaking world, particularly in schools, and some of the movies he wrote are extremely well-regarded, with "Les Enfants du Paradis" considered one of the greatest films of all time.
Split into simpler sentences: His poems became and remain very popular in the French-speaking world, particularly in schools. Some of the movies he wrote are extremely well-regarded, with "Les Enfants du Paradis" considered one of the greatest films of all time.