Translate the following English sentence to French:
"Our heritage, be it cultural, architectural, economic or natural, is the legacy of our past and in protecting it we are not fighting a rearguard action. On the contrary, it shows that we are preparing for our future."
Ce patrimoine, qu' il soit culturel, architectural, économique ou naturel, vient de notre passé : le défendre n' est pas un combat d' arrière-garde, mais marque au contraire la préparation de notre avenir.