I do not think my impartiality could reasonably be questioned.

I do not believe my impartiality can reasonably be questioned,

must disqualify himself or herself in a proceeding in which his or her impartiality might reasonably be questioned.

I think I'm a pretty nice fella.

I think Thomas Jefferson would have said the more speech, the better.

I would think the normal assumption is if one person wants that search excluded, that search is excluded.