Not made a bit nervous by the presence of the police.

Yet, by their mere presence, they had changed the history of Earth.

So few people in our lives have the absolute power to change them, simply by their presence.

What had he done to them, by his mere presence?

A movement made in response to/enabled by the presence of light.

The man brought ghosts with him, simply by his presence.

These people will create problems by their very presence in the barracks, they say.

By its presence, it raises the image of the community.

You and the children would distract me by your presence.

By his very presence in that classroom, he is breaking new ground.