We don't doubt their sincerity, but its leaders have their work cut out if they want to be hosting Songs of Praise any time soon.

BBC: [an error occurred while processing this directive]

As I said, the one concern I've got on the stimulus package in terms of the debate and listening to some of what's been said in Congress is that there seems to be a set of folks who -- I don't doubt their sincerity -- who just believe that we should do nothing.

WHITEHOUSE: Presidential Press Conference

And unlike some of our friends on the right, we don't doubt Mr. Bush's sincerity on the subject.

CENTERFORSECURITYPOLICY: Center For Security Policy

But you are absolutely right that Iran continues to limit its level of cooperation in a way that certainly casts even more doubt on the sincerity of their insistence that they aren't pursuing nuclear weapons.

WHITEHOUSE: Press Briefing

But in any other place, a person would be granted a presumption of sincerity if a dear friend and indispensable colleague had finally met a mountain he couldn't move.

CNN: Washington Diary