(L. "from the similar”); a rhetorical method used in legal field for arguing from similar propositions. If the proposition A is similar in certain aspects with the proposition B, it follows that they be treated alike in those aspects in which they are similar. E.g., Proposition 1, Stability of the office of the parish priest is mandatory according to canon law since it entails the full care of souls. Proposition 2, A priest who has care of a quasi parish also has the full care of souls. Conclusion, The office of the parish priest and the quasi parish should be stable.