[MARCIANUS libro quarto institutionum. ] §28.7.16.pr'Si Titius heres erit, Seius heres esto: si Seius heres erit, Titius heres esto'. Iulianus inutilem esse institutionem scribit, cum condicio existere non possit.
[MARCIANUS, in the fourth book of Institutes.] 'If Titius is heir, let Seius be heir; if Seius is heir, let Titius be heir.' Julian writes that the institution is invalid, since the condition cannot be fulfilled.