Translate the following English sentence to French:
"Europe stands for the noble values of peace, freedom and social development, values which have to be constantly defended for the very reason that they were won at a high price."
L'Europe est porteuse de grandes valeurs telles que la paix, la liberté et le progrès social, valeurs qui doivent être défendues jour après jour parce qu'elles sont le fruit de gros sacrifices.