A professional class of temporal attorneys whose business it is to appear on behalf of litigants is prominent in the nation. The idea of representation has spread outwards from a king who has so many affairs that he can not conduct them in person. Men often appear to defend themselves in the king's court by attorney. But attorneys do not conduct prospective litigation for a client. Attorneys are now drawn from the knightly class of landed gentlemen, instead of ecclesiastical orders. Since it was forbidden for ecclesiastics to act as advocates in the secular courts, those who left the clergy to become advocates adopted a close-fitting cap to hide their tonsures, which came to be called a "coif". The great litigation of the nation is conducted by a small group of men, as is indicated by the earliest Year Books of case decisions compiled by attorneys and students attending the court. These attorneys sit in court and will sometimes intervene as amicus curiae [friends of the court]. Parliament refers difficult points of law to them as well as to the justices. These reports became so authoritative that they could be cited in the courts as precedent. Groups of attorneys from the countryside who are appearing in London courts during term-time and living in temporary lodgings start to form guild-like fellowships and buy property where they dine and reside together, called the Inns of Court. They begin to think of themselves as belonging to a profession, with a feeling of responsibility for training the novices who sat in court to learn court procedures and attorney techniques. They invited these students to supper at the Inns of Court for the purpose of arguing about the day's cases. The Inns of Court evolved a scheme of legal education, which was oral and used disputations. Thus they became educational institutions as well as clubs for practicing attorneys. The call to the bar of an Inn was in effect a degree. To be an attorney one had to be educated and certified at the Inns of Court. They practice law full time. Some are employed by the King. Justices come to be recruited from among those who had passed their lives practicing law in court, instead of from the ecclesiastical orders. All attorneys were brought under the control of the justices.