...expressly designed to refute. No logician will find fault with the following : — " It (logic) has so far nothing to do with the truth of the facts, opinions,...inference shall certainly be true if the premises be true Whether the premises be true or false, is not a question of logic, but of morals, philosophy, history,...

...test of argument. Mr. Augustus de Morgan thus exhibits the spirit of Whately's restriction : — Logic has nothing to do with the truth of the facts, opinions,...shall certainly be true if the premises be true.' It has been, and is to be, objected, that logic, thus confined, ' leaves untouched the greatest difficulties,...

...not previously asserted in the premises. It has, so far, nothing to do with the truth of the fact«, opinions, or presumptions, from which an inference...shall certainly be true if the premises be true." Looking from this point of view on logic as a formal science, and striving to build up in his own mind...

...has common sense. Now Peter may be a known idiot, but the syllogism is true. The logic of the schools has nothing to do with the truth of the facts, opinions,...inference shall certainly be true if the premises be true. But the chief premise in the syllogism given is not true • that all men have common sense, and therefore...

...has common sense. Now Peter may be a known idiot, but the syllogism is true. The logic of the schools has nothing to do with the truth of the facts, opinions,...simply takes care that the inference shall certainly he true if the premises be true. But the chief premise in the syllogism given is not true — that...