Napoleon, in his preparation of jurists, wants executants and not critics; his faculties must furnish him with men able to apply and not to give opinions on his laws. Hence, in the teaching of the law, as he prescribes it, there must be nothing of history, of political economy or of comparative law; there must be no exposition of foreign legislation, of feudal or custom law, or of canon law; no account of the transformations which governed public and private law in Rome down to the Digest[6225] and, after that, in France, down to the recent codes. But nothing on remote origins, on successive forms and the diverse and ever-changing conditions of labor, property and the family; nothing which, through the law, exposes to view and brings us in contact with the social body to which it is applied. That is to say, this or that active and human group, with its habits, prejudices, instincts, dangers and necessities; nothing but two dry, rigid codes, like two aerolites fallen from the sky ready-made and all of a piece at an interval of fourteen centuries. At first, the Institutes,[6226] "by cutting out[6227] what is not applicable to our legislation and replacing these matters by a comparison with much finer laws scattered through other books of Roman law," similar to the classes in the humanities, where Latin literature is reduced to the finest passages of the classic authors. Next, the French code, with the comments on it due to the decisions of the court of appeals and the court of cassation.[6228] All the courses of lectures of the school shall be obligatory and arranged as a whole, or tacked on to each other in a compulsory order; each step the student takes shall be counted, measured and verified every three months by a certificate, and each year by an examination; at these examinations there shall be no optional matters, no estimate of collateral studies or those of complimentary or superior importance. The student finds no attraction or benefit in studies outside of the programme, and, in this programme he finds only official texts, explained by the bill of fare, one by one, with subtlety, and patched together as well as may be by means of distinctions and interpretations, so as to provide the understood solution in ordinary cases and a plausible solution in disputed cases, in other terms, a system of casuistry.[6229]