[IAUOLENUS libro duodecimo epistularum. ] §44.7.55.prIn omnibus rebus, quae dominium transferunt, concurrat oportet affectus ex utraque parte contrahentium: nam siue ea uenditio siue donatio siue conductio siue quaelibet alia causa contrahendi fuit, nisi animus utriusque consentit, perduci ad effectum id quod inchoatur non potest.
[JAVOLENUS, Letters, Book XII] In all matters that transfer ownership, there must be a concurrence of intention on both sides of the contracting parties; for whether it was a sale, a donation, a lease, or any other cause of contracting, unless the mind of both consents, that which is begun cannot be brought to completion.