"I Disapprove of What You Say, But I Will Vouch to the Death Your Right to Say It"
How about "I disapprove what you say, but you can go say it on your account, and not in mine, because your replies will be hidden, because it is my account.".
I did that — vouched for comments that I thought were on-topic and dead only because people (sometimes including me) disagreed — and promptly lost the ability to vouch.