Of the Advancement of Learning.
(London, 1605.)
CYPHARS
For Cyphars; they are commonly in Letters or Alphabets, but may bee in Wordes. The kindes of Cyphars, (besides the Simple Cyphars with Changes, and intermixtures of Nvlles, and Nonsignificants) are many, according to the Nature or Rule of the infoulding: Wheele-Cyphars, Kay-Cyphars, Dovbles, &c. But the vertues of them, whereby they are to be preferred, are three; that they be not laborious to write and reade; that they bee impossible to discypher; and in some cases, that they bee without suspition. The highest Degree whereof, is to write Omnia Per Omnia; which is vndoubtedly possible, with a proportion Quintuple at most, of the writing infoulding, to the writing infoulded, and no other restrainte whatsoeuer. This Arte of Cypheringe, hath for Relatiue, an Art of Discypheringe; by supposition vnprofitable; but, as things are, of great vse. For suppose that Cyphars were well mannaged, there bee Multitudes of them which exclude the Discypherer. But in regarde of the rawnesse and vnskilfulnesse of the handes, through which they passe, the greatest Matters, are many times carryed in the weakest Cyphars.