Using the Aristotelian concept of artistic proof, this thesis analyzes nine televised speeches presented by President Reagan from February 1981 through April 1983. Reagan skillfully utilizes only two modes of rhetorical proof--ethos and pathos. However, his lack of logical proof has not lessened his effectiveness. This study reveals several reasons for Reagan's rhetorical effectiveness and success. For example, Reagan's strong ethical image and personality comfort his audience and encourage their trust. His weaknesses in logical argument are overlooked by his audience because of his high personal appeal. Furthermore, Reagan's use of pathos appeals makes Americans feel good about themselves and their country, helping him to maintain his popularity. Finally, Reagan's skillful use of the television medium has increased his effectiveness.