"Well," said Arthur, "do you accept it as self-evident? Is it as obvious, for instance, as that 'things that are greater than the same are greater than one another'?"
"To my mind," she modestly replied, "it seems quite as obvious. I grasp both truths by intuition. But other minds may need some logical——I forget the technical terms."
"For a complete logical argument," Arthur began with admirable solemnity, "we need two prim Misses——"
"Of course!" she interrupted. "I remember that word now. And they produce——?"
"A Delusion," said Arthur.
"Ye——es?" she said dubiously. "I don't seem to remember that so well. But what is the whole argument called?"
"A Sillygism."
"Ah, yes! I remember now. But I don't need a Sillygism, you know, to prove that mathematical axiom you mentioned."
"Nor to prove that 'all angles are equal', I suppose?"
"Why, of course not! One takes such a simple truth as that for granted!"
S2
