treme, you know), he sees one thing as two. But, when he's extremely sober (that's the other extreme), he sees two things as one. It's equally inconvenient, whichever happens."
"What does 'illconvenient' mean?" Bruno whispered to Sylvie.
"The difference between 'convenient' and 'inconvenient' is best explained by an example," said the Other Professor, who had overheard the question. "If you'll just think over any Poem that contains the two words——such as——"
The Professor put his hands over his ears, with a look of dismay. "If you once let him begin a Poem" he said to Sylvie, "he'll never leave off again! He never does!"
"Did he ever begin a Poem and not leave off again?" Sylvie enquired.
"Three times," said the Professor.
Bruno raised himself on tiptoe, till his lips were on a level with Sylvie's ear. "What became of them three Poems?" he whispered. "Is he saying them all, now?"
"Hush!" said Sylvie. "The Other Professor is speaking!"
