Trout believed in things like that, was greedy to have their existence proved.

The existence of organizations such as yours proves the point.

But our existence proves that more change is unnecessary.

The existence of the World proves that it was created; therefore there is a Creator.

To them, our existence proved that S-space must be safe.

The existence of this force proved to have been a wise move.

Their existence proves the prohibited theory that there is life outside of the living crystal.

This physico-theology does not, however, prove with certainty the existence of God.

The existence of a concrete model proves the consistency of a system.

Your existence proves that there is truth in mythology, as some of us have always believed.