Translate the following English sentence to French:
"If we have success in this threefold sense, I believe that these families, these people, these European citizens, will believe more in Europe, and this seems to me to be very important because, ultimately, the cities will increasingly come to play a leading role in European life."
Si nous y parvenons en suivant cette triple orientation, je pense que ces familles, ces personnes, ces citoyens européens croiront davantage en l'Europe, et cela me semble très important parce que, en fin de compte, les villes seront de plus en plus les protagonistes de la vie européenne.