It furnishes her with the petitio principii that man is under an ethical obligation to give anything she chooses to ask.
But in this counter argument of yours it strikes me that there lurks a petitio principii.
But, if I had reasoned thus, I should not only have been guilty of a petitio principii (as you alleged), but also of a circle.
The point which the analogy is adduced to prove is therefore postulated by the fact of its being adduced at all, and the whole argument resolves itself into a case of petitio principii.
And, as a final step, we may now see that the argument from Design, in its last resort, resolves itself into a petitio principii.
It is needless to remark that this whole argument, whatever may be said of the former one, is a pure fallacy, and a petitio principii throughout.
And it is as much a petitio principii to assume, in Ethics, the existence of moral feelings, as to assume, in Optics, the existence of sight.
We obviously cannot argue from the analogy of man's action, since he is a part of the problem itself, included in the question, and such an analogy is a petitio principii.
This is an 'argumentum in circulo', and 'petitio rei sub lite'.
The words 'their subject' are 'a petitio principii'.
And since in reality we explain the Universe neither better nor worse with this idea than without it, the idea of God, the supreme petitio principii, is valueless.
Advocacy always supposes a petitio principii, and its arguments are ad probandum.
I have always felt, in reading the writings devoted to this problem, a profound feeling of discomfort; I was always expecting to run against a petitio principii, and when I did not immediately perceive it, I feared I had overlooked it.
I understand Peanian too ill to dare risk a critique, but still I fear this definition contains a petitio principii, considering that I see the figure 1 in the first member and Un in letters in the second.
I shall devote my attention in what follows only to those of these definitions where thepetitio principii is most ably concealed.
And then the declivity is slippery and at each instant there is risk of a fall intopetitio principii.
Contradictions accumulate; we feel that the author is dimly conscious of the petitio principii he has committed, and that he seeks vainly to patch up the holes in his argument.
This mode of reasoning, by which a bad generalization is made to overrule all facts which contradict it, is Petitio Principii in one of its most palpable forms.
Since every case where a conclusion which can only be proved from certain premises is used for the proof of those premises, is a case of petitio principii, that fallacy includes a very great proportion of all incorrect reasoning.
Is it not, then, a petitio principii to say, that the fact ought to be disbelieved because the induction opposed to it is complete?
It must be granted that in every syllogism, considered as an argument to prove the conclusion, there is a petitio principii.
The fallacy I mean is that of Petitio Principii, or begging the question; including the more complex and not uncommon variety of it, which is termed Reasoning in a Circle.
The following are additional instances of Petitio Principii, under more or less of disguise.
We have before remarked, that almost every fallacy may be referred to different genera by different modes of filling up the suppressed steps; and this particular one may, at our option, be brought under petitio principii.
This is the major premise divested of the petitio principii, and cut down to as much as is really known by direct evidence.
Here you see that there is a petitio principii; and in my operations I was assuming that of which I was in search, namely, the length of the oval.
Therefore we must either hit upon some other method of reducing the theory of the 45th chapter to calculation; or if that cannot be done, the theory itself, suspected on account of this petitio principii, will totter.
He also, by a transparent petitio principii, brought the law of the sufficient reason under that of non-contradiction.
The syllogism of "all-ness" is convicted of a petitio principii (Encyk.
Thus on the threshold of the subject Kant makes his first petitio principii, and that no small one.
But seriously: into what an outrageous petitio principii do we find Kant's moral law here developed!
But it is exceedingly easy to show that it is a bald instance of petitio principii, and it is founded on a preposterous interpretation of the Golden Rule, which every sensible Sabbath-school boy knows how to explode.
So that the reasoning amounts to no more than this ridiculous petitio principii: "Because the slaves do all the work, therefore the masters do none of the work.
The very construction of the syllogism, it is said, involves a petitio principii.
Both are syllogisms, the former analytic, the latter unfigured, but to neither does the objection of petitio principii apply so far as regards the mere form of statement.
In so far as the objection ofpetitio principii relates, not to the nature of reasoning, but only to its form, this is entirely a matter of accident, and does not pertain to the syllogism as such.
But if the words are cited as the proof, it would be a clear petitio principii, though there had been nothing else against it.
Another critic has endeavoured to get rid of the petitio principii in the syllogism by substituting for the common form of expression, the following form—All known men were mortal, Socrates is a man, therefore Socrates is mortal.
It is true that in a syllogism of this particular type, thepetitio principii is disguised.
The reviewer denies that there is a petitio principii in the syllogism, or that the proposition, All men are mortal, asserts or assumes that Socrates is mortal.
This is the major premiss, divested of the petitio principii, and cut down to as much as is really known by direct evidence.
The objection of hostile critics has been to the history rather than to the chronology of the history; but these objections are a mere petitio principii.
Is it not, then, a petitio principii to say, that the fact ought to be disbelieved because the induction to it is complete?
It is in fact a flagrant petitio principii, used to support a wholly unphilosophical assertion.
Such an argument is no argument at all; it is a mere petitio principii, incapable of proving anything.
Mr. Mill decides that the proposition is not a petitio principii; Dr.
Farrar says, as in continuation of his reference to Mr. Mill, that it is a flagrantpetitio principii.
Under the head of petitio principii comes the fallacy of Arguing in a Circle, which is incidental to a train of reasoning.
The second, strange to say, gives us a sound syllogism in Barbara, a fact which countenances the blasphemers of the syllogism in the charge they bring against it of containing in itself a petitio principii.
It might be objected, to the above argument, that it involves a petitio principii.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "petitio" in a variety of sentences. We hope that you will now be able to make sentences using this word.
