One day when I was a junior medical student, a very important Boston surgeon visited the school and delivered a great treatise on a large number of patients who had undergone successful operations for vascular reconstruction. At the end of the lecture, a young student at the back of the room timidly asked, "Do you have any controls?" Well the great surgeon drew himself up to his full height, hit the desk, and said, "Do you mean did I not operate on half of the patients?" The hall grew very quiet then. The voice at the back of the room hesitantly replied, "Yes, that's what I had in mind." Then the visitor's fist really came down as he thundered, "Of course not. That would have doomed half of them to their death!" God, it was quiet then, and one could scarcely hear the small voice ask, "Which half?"
The human maker, working in unself-conscious matter, receives no worship from his creatures, since their will is no part of his material; he can only receive the response of their nature, and he is alone in fault if that response is not forthcoming. If he tortures his material, if the stone looks unhappy when he has wrought it into a pattern alien to its own nature, if his writing is an abuse of language, his music a succession of unmeaning intervals, the helpless discomfort of his material universe is a reproach to him alone; similarly, if he respects and interprets the integrity of his material, the seemliness of the ordered work proclaims his praise, and his only, without will, but in a passive beauty of right structure.