Second, because the idea of petitio principii is an interesting one and it is useful to have an English phrase for it.    From Wordnik.com.  [Archive 2008-04-01] Reference

The first is the fallacy of presumption, also know as petitio principii, which you impliedly assert is the only correct denotation.    From Wordnik.com.  [The Volokh Conspiracy » Court Rejects as “Absurd”] Reference

Under the head of petitio principii comes the fallacy of.    From Wordnik.com.  [Deductive Logic] Reference

Then there is the petitio principii, begging the question.    From Wordnik.com.  [THE QUEENSBERRY RULES OF DISCOURSE] Reference

But that's a blatantly obvious example of petitio principii.    From Wordnik.com.  [A Case Study in Scientific Discovery] Reference

Now by itself, that seems little better than a petitio principii.    From Wordnik.com.  [The Catholic condom debate III] Reference

They're bald, unsubstantiated assertions, simply oozing with petitio principii.    From Wordnik.com.  [Archive 2008-06-01] Reference

Instead of calling it petitio principii, I would call it an ouroborus argument.    From Wordnik.com.  [The Volokh Conspiracy » “Beg the Question”] Reference

It's a preposterous claim, advanced in an unsubtle petitio principii sort of way.    From Wordnik.com.  [Archive 2006-03-01] Reference

You're just employing another petitio principii and it's not worth anyone time to answer.    From Wordnik.com.  [TEXAS FAITH: Why is the political pendulum swinging so much? | RELIGION Blog | dallasnews.com] Reference

"You're just employing another petitio principii and it's not worth anyone time to answer.".    From Wordnik.com.  [TEXAS FAITH: Why is the political pendulum swinging so much? | RELIGION Blog | dallasnews.com] Reference

The phrase comes from an archaic and clumsy translation of the Latin phrase petitio principii.    From Wordnik.com.  [Archive 2008-04-01] Reference

After a long comment on petitio principii, here you are assuming what you are attempting to prove.    From Wordnik.com.  [Bits and Pieces of an RNA World] Reference

Other logical fallacies I have seen thus far: bifurcation, dicto simpliciter, petitio principii, and shifting the burden of proof.    From Wordnik.com.  [he's back] Reference

"Begging the question" is a precise technical term with a specific meaning namely, the logical fallacy petitio principii, after all.    From Wordnik.com.  [he's back] Reference

It is a mere petitio principii to argue that the latter is.    From Wordnik.com.  [Arabian nights. English] Reference

The argument therefore is a mere 'petitio principii sub lite'.    From Wordnik.com.  [The Literary Remains of Samuel Taylor Coleridge] Reference

Certainly the petitio principii was a main feature of their logic.    From Wordnik.com.  [PG Edition of Netherlands series — Complete] Reference

Is it not, at least logically considered and at the commencement of an argument, too like a 'petitio principii' or.    From Wordnik.com.  [The Literary Remains of Samuel Taylor Coleridge] Reference

None of these manifestations, however, were sufficient to make the spiritualistic theory any other than a huge petitio principii.    From Wordnik.com.  [Mystic London: or, Phases of occult life in the metropolis] Reference

The common use of "begs the question" is a natural error, and the technical translation of "petitio principii" is not at all intuitive.    From Wordnik.com.  [Crooked Timber] Reference

And last, it is a 'petitio principii', or begging the question, to take for granted that a state has no power except in case of overt acts.    From Wordnik.com.  [Literary Remains, Volume 1] Reference