To the Author of the System of Cryptography,

 his most Clement Lord:

 As, what might in dusky cloak conceals,
        bright Cynthia soon with torch full-flaming shows,
so, too, Gustavus now, Selenus called,
        uncovers things that time has long in shadow held.
Great things befit great men, ‘tis true.
        and so can Luna see what little stars see not.

So soon Gustavus much, by subtle strength of mind,

that other men, of common wit, have quite passed by.

And thus it is that he who would the art of these enjoy

finds Gustavo’s work a source of fruitful lore.

As August month more grateful is than winter fire, so are thy written

words, Selenus, more than all the words that others write.
Therefore, August Diana, shed thy rays throughout the earth,

 the light which Sol has given thee scatter wide.
Shed, too, on me the rays of burning love,

and see that never of they love thou me deprive.
be to me, with Phoebus, Phoebe’s gentle light;

may God and my Lord for me in love forever vie.
So, like the Sun’s obedient flower and the flower that Luna guides,

for Phoebus then and Phoebe with hand and heart I’ll strive.
 

Composed, as a mark of most Humble Devotion, by

Matthaus von Jagow, Lord, by right of inheritance, at Kalembergk,

at present Steward of the Selenic household at Hitsacker, and

one of the advisers of the Author himself.