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.
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human