He who has conquered is not conqueror
Unless the conquered one confesses it.

[Qui vincit non est victor nisi victus fatetur.]

Ennius (239-169 BC) Roman poet, writer [Quintus Ennius]

Annales, Fragment 485
    (Source)

Quoted by Marcus Servius Honoratus, Commentaries on the Poems of Virgil [In Vergilii Carmina Comentarii], Book 11. Alt. trans.:

• "He who conquers is not the conqueror unless the conquered admits it." [Source, 493 (Vahlen)]
• "He who conquers is no conqueror unless the conquered admits it." [Source, 513]
• "The victor is not victorious if the vanquished does not consider himself so." [Source]