a younger brother puts himself into seisin and dies so seised; he transmits to his  heirs with the possessory right a certain proprietary right which should follow the  principal proprietary [right], and so from heir to heir. The heirs of the first brother  have a greater right than those of the second, but possession must always be  preferred until the heirs of the first recover their right. If the younger brother has  several sons and a younger son puts himself in seisin, what was said above is true  of him. Thus proprietary right may descend to several different heirs [and to their  heirs] ad infinitum, in such a way that though several have proprietary rights1 one  or several may have a greater right.>2
What jurisprudence is.
 3Jurisprudence is the knowledge of things divine and human, the science of the  just and unjust.4
What equity is.
 5Equity is the bringing together of things, that which desires like right in like  cases and puts all like things on an equality. Equity is, so to speak, uniformity, and  turns upon matters of fact, that is, the words and acts of men. Justice, [on the  other hand], lies in the minds of the just. Hence it is that if we wish to speak  properly we will call a judgment equitable, not just, and a man just, not equitable.  But using these terms improperly, we call the man equitable and the judgment just.6  7Jurisprudence therefore differs in many ways from justice. For jurisprudence  discerns, justice awards to each his due. Justice is a virtue, jurisprudence a science.  Justice is a certain summum bonum; jurisprudence a medium.8
What the praecepta iuris are.
 9The praecepta iuris are three: to live virtuously, to injure no one, to give to each  man his right.1011[Rights are infinite], because men are infinite and things are infinite,  but the kinds of law are [not] infinite, for we would then speak of equine and of  asinine law, of the law of vineyards and that of fields, the law of Peter and that of  John.1213There is public law, which pertains to the common welfare14 of the Roman  res publica and deals with religion, priests and public officers. For it is in the interest  of the res publica that it have churches
5-6. Azo, Summa Inst. 1.1, no. 7, from Placentinus, Summa Inst. 1.1; Carlyle ii, 8-10; Wohlhaupter, Aequitas Canonica, 13; Lange in Zeit. d. Sav. Stift. f. Rechtsgeschichte (Rom. abt.) lxxi, 321; Cortese, i, 306, ii, 30-31, 245 ff.
[Infinita sunt iura], quia infiniti sunt . . .res; infinitae vero [non] sunt iurisspecies, nam et sic diceretur; cf. Kantorowicz, 82-5;Fesefeldt, 147 n.; Vinogradoff, Coll. Pap., i,243; infinita sunt iura: infraiii, 165, 166