"Some individuals have developed such strong internal standards that they no longer need the opinion of others to judge whether they have performed a task well or not. The ability to give objective feedback to oneself is in fact the mark of the expert."

Next Quote

There have been household gods and household saints and household fairies. I am not sure that there have yet been any factory gods or factory saints or factory fairies. I may be wrong, as I am no commericial expert, but I have not heard of them as yet.

— Gilbert K. Chesterton