He had that worrying habit to see people like instruments. He gave them a function and then he used them until they did not fulfilled it any more. Sometimes, his choice was wrong, the usefullness he was searching for did not fit the person. So he chose another one. I believe to have some idea about my function. I was for him a kind of motor engine, a spur, an ass-pusher as he could have said. That aspect of his personality was not strongly affirmed: he knew that and he responded to that urge in his own manner.