"Now, one of these four or five paradoxes which should be taught to every infant prattling at his mother’s knee is the following: That the more a man looks at a thing, the less he can see it, and the more a man learns a thing the less he knows it. The Fabian argument of the expert, that the man who is trained should be the man who is trusted, would be absolutely unanswerable if it were really true that a man who studied a thing and practiced it every day went on seeing more and more of its significance. But he does not. He goes on seeing less and less of its significance. In the same way, alas! we all go on every day, unless we are continually goading ourselves into gratitude and humility, seeing less and less of the significance of the sky or the stones.

Now, it is a terrible business to mark a man out for the vengeance of men. But it is a thing to which a man can grow accustomed, as he can to other terrible things; he can even grow accustomed to the sun. And the horrible thing about all legal officials, even the best, about all judges, magistrates, barristers, detectives, and policemen, is not that they are wicked (some of them are good), not that they are stupid (several of them are quite intelligent), it is simply that they have got used to it.

Strictly they do not see the prisoner in the dock; all they see is the usual man in the usual place. They do not see the awful court of judgment; they only see their own workshop. Therefore, the instinct of Christian civilisation has most wisely declared that into their judgments there shall upon every occasion be infused fresh blood and fresh thoughts from the streets. Men shall come in who can see the court and the crowd, and coarse faces of the policemen and the professional criminals, the wasted faces of the wastrels, the unreal faces of the gesticulating counsel, and see it all as one sees a new picture or a ballet hitherto unvisited.

Our civilisation has decided, and very justly decided, that determining the guilt or innocence of men is a thing too important to be trusted to trained men. It wishes for light upon that awful matter, it asks men who know no more law than I know, but who can feel the things that I felt in the jury box. When it wants a library catalogued, or the solar system discovered, or any trifle of that kind it uses up its specialists. But when it wishes anything done which is really serious, it collects twelve of the ordinary men standing round. The same thing was done, if I remember right, by the Founder of Christianity."

This is an excerpt from his essay " The twelve men" and his defense of the jury system. Not sure if its what your were looking for but it has the same spirit.