Experts are people who know a great deal about very little and who go along learning more and more about less and less until they know practically everything about nothing. Lawyers, on the other hand, are people who know very little about many things and keep learning less and less about more and more until they know practically nothing about everything. Judges are people who start out knowing everything about everything but end up knowing nothing about anything because of their constant association with experts and lawyers.
(From the "Rest" of RHF)