Cat

“He would sometimes become frustrated, very frustrated, because we would set goals for him, and it would happen that we, who knew nothing about what would turn out to be possible or impossible, had helped him to set a goal that was too much. This was enormously depressing for him. On the other hand, if we set goals that were too easy, then he would lose interest, or what's worse, struggle with those out of some expectation that this easier thing was as hard as some other hard thing we had recently shown to him. There had to be a happy balance, though, and we learned it in time. Mostly it was a matter of mood--keeping a strong mood of joyfulness and gratefulness, and trying not, in our attitudes or speech, to lay the world out in hierarchies.”
― Jesse Ball, Census