`"Well, now you are pushing your joke too far," said the classmate, "surely the population has nothing to do with the circumference of the circle."` I've alway

`"Well, now you are pushing your joke too far," said the classmate, "surely the population has nothing to do with the circumference of the circle."` I've always loved this line and paraphrase it often. It's an eminently reasonable and yet accidentally profound thing to say.