Translate the following English sentence to French:
"All those who repeat their words and their ideas are therefore giving them credibility, and all those who think they can moderate them by involving them in public affairs are making them commonplace."
Alors, ceux qui reprennent leurs discours et leurs thèmes les crédibilisent, et ceux qui pensent pouvoir les apprivoiser en les associant aux affaires publiques, les banalisent.