“It is most unlikely. But--here comes the big "but"--not impossible.”

“She might even be your lovely school-teacher who is reading these words to you at this very moment. Look carefully at that teacher. Perhaps she is smiling at the absurdity of such a suggestion. Don't let that put you off. It could be part of cleverness.I am not, of course, telling you for one second that your teacher actually is a witch. All I am saying is that she might be one. It is most unlikely. But—here comes the big "but"—not impossible.”

“Highly unlikely but not impossible.”

“if being is many, it must be both like and unlike, and this is impossible, for neither can the like be unlike, nor the unlike like”

“Happiness often comes in the most unlikely and unexpected situations, when we are not really looking for it.”

“I think it's IMPOSSIBLE for anyone famous to come from here, because everyone around here is insane.”