“Let's see,”
the doctor murmured to himself, “supposing the length of a rat to be ten inches, forty
thousand rats placed end to end would make a line of...”
He pulled
himself up sharply. He was letting his imagination play pranks, the last thing
wanted just now. A few cases, he told himself, don't make an epidemic; they
merely call for serious precautions.
Albert Camus
The Plague