This would suggest he wasn't exactly the impartial observer he presented himself as.

She said, You're just passing through, an impartial observer, a reluctant tourist, emotionally disconnected.

Rashad's cool, clinical gaze forced me to assess myself as an impartial observer might.

He might have appeared somewhat grotesque to the strictly impartial observer of human nature.

You'll be going in as an impartial observer and mediator.

To an impartial observer their policy of neutrality, if not heroic, was at least wise.

Let us describe the effect in the words of an impartial observer writing at the time:-

To an impartial observer, lying appears to be the only personal accomplishment in a new country.

Let us see how the inquiry impressed an impartial observer, the Lord Chief Justice of England.

They affected the tone of an impartial observer

Lloyds disagrees, but is hardly an impartial observer.

An impartial observer would not have found it easy to determine which party expressed more surprise.

Perhaps, in some ways, an impartial observer might have regarded it as a change for the better.

To an impartial observer it might have appeared that her intellect was growing more active and mature.

An impartial observer might have expressed a less confident opinion concerning the object of Miss Connie's affections.

Noah Wicker, for instance, while not exactly an impartial observer, had arrived at quite a different conclusion.