In order to be company he must display a certain mental activity. But it need not be of a high order. Indeed it might be argued the lower the better. Up to a point. The lower the order of mental activity the better the company. Up to a point.

"The earth makes a sound as of sighs and the last drops fall from the emptied cloudless sky. A small boy, stretching out his hands and looking up at the blue sky, asked his mother how such a thing was possible. Fuck off, she said."

Samuel Beckett

"To have been always what I am - and so changed from what I was."

Samuel Beckett

"Words are all we have."

Samuel Beckett