but se the justice Vieta speakes sleightlie of Copernicus a
greater then Atlas. Kepler speakes as slightlie of Vieta, a
greater then Appollonius whom Kepler everie wher admires. For
whosoever can doe the things that Kepler cannot doe, shalbe to
him great Appollonius. But enough of Kepler let me once againe
intreate your counsel how to read him with best profit, for I
am wholie possessed with Astronomical speculations and
desires. For your declaration of Vieta's appendicle it is so
full and plaine, as you haue aboundantlie satisfyed my desire,
for wch I yield you the thankes I ought, onlie in a word tell
me whether by it he can solue Copernicus, 5 cap: of his 5.
booke. The last of Vieta's probleames you leaue to speake of
because (you say) I had a better of you, wch was more
vniuersal and more easilie demonstrated, and findeth the
point, E. as wel out of the plaine of the triangle giuen, as
in the plaine. I pray here helpe my memorie or
vnderstand-inge, for although I haue bethought my selfe vsq ad
insaniam, I cannot remember or conceaue what proposition you
meane. If I haue had such a one of you, tel me what one it is
and by what tokens I may know it ; If I haue not had, then let
me now haue it, for you know how much I loue your things and
of all wayes of teaching for richnesse and fullnesse for
stuffe and forme, yours vnto me are incomparablie most
satisfactorie. If your leasure giue you leaue imparte also
unto me somewhat els of your riches in this argument.

Let me intreate you to advise and direct this bearer Mr.
Vaughan wher and how to prouide himselfe of a fit sphere ;
that by the contemplation of that our imaginations here may be
releued in manie speculations that perplexe our vnderstandings