Man is man because he chanced to develop intelligence instead of instinct; otherwise he would to this day have remained among the anthropoid apes. He has turned away from nature, become unnatural, as it were, disliked the earth upon which he found himself, and changed the face of it somewhat to his liking.
It's important to show that, while authorizing the demonstrations and promoting diversity of opinion, the Republic can't allow itself to be undermined from within.