Vegetarians have the best diet. They have the lowest rates of coronary disease of any group in the country....they have a fraction of our heart attack rate and they have only 40 percent of our cancer rate. They outlive other men by about six years now.
A figure of speech in which words and phrases with opposite meanings are balanced against each other. An example of antithesis is "To err is human, to forgive, divine." (Alexander Pope)