Conversation:

This sounds very similar to Berkeley's immaterialism which was beautifully summarised in two limericks by Ronald Knox:

There was a young man who said "God
Must find it exceedingly odd
To think that the tree
Should continue to be
When there's no one about in the quad."


"Dear Sir: Your astonishment's odd;
I am always about in the quad.
And that's why the tree
Will continue to be
Since observed by, Yours faithfully, God."