What is a cryptogram? asked the Pupil.
It is a cipher, replied the Sage.
What is a cipher? persisted the Pupil.
It is naught, answered the Sage.
Is there a cryptogram in this book? asked the Pupil.
If there be, a Sage alone will find it. It should explain
aught that may seem irrelevant.—_The Wisdom
of Shacabac._