I find it’s best to speak with insights that are undeniable, because undeniable truths are hard to argue with.
Rhetorical devices offer many choices for stating things, persuasively. Petitio principii is the one at work in the above quote. It’s better known as begging the question. Where as the conclusion is similar to the premise. It’s similar to or a form of tautology. How do I know this? You can trust me, because I’m honest!
Either way, you can test this as a way of having the receiving person’s internal reaction be, “that’s true.”
Both of the following are examples found at http://courses.csusm.edu/fallacies/petitio.htm because courses.CSUM.edu allowed them to be posted there.
“No one is permitted to use the gymnasium on weekends, since people are permitted to use the gymnasium only on week days.” – ?
“The reason I keep insisting that there was a relationship between Iraq and Saddam and al-Qaida is because there was a relationship between Iraq and al-Qaida.”
–George W. Bush