Repetition is not proof. Unless the restatement is accompanied by reasons, statistics, examples, or the statements of competent and unprejudiced authorities, it is no stronger than the original utterance.
The following declaration seems to prove a point. Actually it does not because there is no evidence offered.
My candidate is the best qualified of all. In character, experience, education, and intellectual ability he is superior to everyone who is running for this office. No one even remotely approaches his qualifications for the position. He stands head and shoulders above the other candidates. Everyone admits his superior merits. Therefore he deserves your vote.
Chapter 23 Language and Logic, in Warriner's English Grammar and Composition Revised Edition, Complete Course, John E. Warriner and Francis Griffith, 1965