Translate the following English sentence to French:
"The presidency began by stating an excellent principle - no communications interception system is admissible if it does not respect the principles of human dignity and the legislation of Member States - but the end of his statement was extremely muddled."
La présidence a commencé par poser un excellent principe : tout système d' interception des communications est inadmissible s' il ne respecte pas les principes de la dignité humaine et les normes juridiques des pays membres, mais la suite de l' exposé a été extrêmement confuse.