And yet
(_on the other side_) I am so sensible both of how much I have, either out
of necessity or choice, left undone, and of the fruitfullness of the
subject I have begun to handle; that though I had performed far more then
'tis like many Readers will judge I have, I should yet be very free to let
them apply to my Attempts that of _Seneca_, where having spoken of the
Study of Natures Mysteries, and Particularly of the Cause of Earth-Quakes,
he subjoins.[1] _Nulla res consummata est dum incipit. Nec in hac tantum re
omnium maxima ac involutissima, in qua etiam cum multum actum erit, omnis
aetas, quod agat inveniet; sed in omni alio Negotio, longe semper a perfecto
fuere Principia._
[1] L. Annae Senecae Natur. Quest. l. 6. c. 5.
* * * * *
_The Publisher to the_
READER.
_Friendly Reader,_
Here is presented to thy view one of the Abstrusest as well as the
Gentilest Subjects of Natural Philosophy, the _Experimentall History of
Colours_; which though the Noble Author be pleased to think but _Begun_,
yet I must take leave to say, that I think it so well begun, that the work
is more than half dispatcht. Concerning which I cannot but give this
advertisement to the Reader, that I have heard the Author express himself,
that it would not surprise him, if it should happen to be objected, that
some of these Experiments have been already published, partly by Chymists,
and partly by two or three very fresh Writers upon other Subjects.
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