25 Nemo Dat Qui Non Habet
No man can give a better title than that which he himself has. See § 163.
26 Non Omne Quod Licet Honestum Est
D. 50. 15. 144. pr.
All things that are lawful are not honourable. The law is constrained by the necessary imperfections of its methods to confer many rights and allow many liberties which a just and honourable man will not claim or exercise.