Translate the following English sentence to French:
"This is clear when you travel around the Union and see how the diverse spiritual trends over the centuries have been embodied in our monuments, artistic styles, value systems, religious and spiritual trends, and schools of philosophical and scientific thought. In short, and in accordance with the Treaties, we must go deeper with our European cultural policy, supporting and protecting our cultural diversity, a factor which in turn defines the European Union."
En somme, et conformément aux Traités, il faut approfondir la politique culturelle européenne en soutenant et en protégeant sa diversité, un facteur qui définit aussi l'unité européenne.