A Universitas was an association in the world of learning which corresponded to a Guild in the world of commerce, a union among men living in a Studium and possessing some common interests to protect and advance. Originally, a Universitas could exist in a less (p. 011) important school than a Studium Generale, but with exceptional instances of this kind we are not concerned. By the time which we have chosen for the central point of our survey, the importance of these guilds or Universitates had so greatly increased that the word "Universitas" was coming to be equivalent to "Studium Generale." In the fifteenth century, Dr Rashdall tells us, the two terms were synonymous. The Universitas Studii, the guild of the School, became, technically and officially, the Studium Generale itself, and Studia Generalia were distinguished by the kind of Universitates or guilds which they possessed. It is usual to speak of Bologna and Paris as the two great archetypal universities, and this description does not depend upon mere priority of date or upon the impetus given to thought and interest in Europe by their teachers or their methods. Bologna and Paris were two Studia Generalia with two different and irreconcilable types of Universitas. The Universitates of the Studium of Bologna were guilds of students; the Universitas of the Studium of Paris was a guild of masters. The great seats of learning in Medieval Europe were either universities of students or universities of masters, imitations of Bologna or of Paris, or modifications of one or the other or of both. It would be impossible to draw up a list and divide medieval (p. 012) universities into compartments. Nothing is more difficult to classify than the constitutions of living societies; a constitution which one man might regard as a modification of the constitution of Bologna would be in the opinion of another more correctly described as a modification of the constitution of Paris, and a development in the constitution of a University might be held to have altered its fundamental position and to transfer it from one class to another. Where students legislated for themselves, their rules were neither numerous nor detailed. Our information about life in the student-universities is, therefore, comparatively small, and it is with the universities of masters that we shall be chiefly concerned. It is, however, essential to understand the powers acquired by the student-guilds at Bologna, the institutions of which were reproduced by most of the Italian universities, by those of Spain and Portugal, and, much less accurately, by the smaller universities of France. CHAPTER II (p. 013) LIFE IN THE STUDENT-UNIVERSITIES