In co-partnerships, it is necessary that each party be true.
In consimili casu, consimile debet esse remedium.
In a similar case there ought to be a similar remedy.
In consuetudinibus non diuturnitas temporis sed soliditas rationis est consideranda.
In customs, not continuance of time, but solidity of reason, is to be considered.
In contractibus, benigna; in testamentis benignior; in restitutionibus, benignissima interpretatio facienda est.
In contracts, an interpretation must be made favourable; in testaments more favourable; in restitutions most favourable of all.
In contrahenda venditione ambiguum pactum contra venditorem interpretandum est.
In contracting a sale, a doubtful bargain is to be interpreted against the seller.
In criminalibus probationes debent esse luce clariores.