友情提示:如果本网页打开太慢或显示不完整,请尝试鼠标右键“刷新”本网页!
valerius terminus-第5部分
快捷操作: 按键盘上方向键 ← 或 → 可快速上下翻页 按键盘上的 Enter 键可回到本书目录页 按键盘上方向键 ↑ 可回到本页顶部! 如果本书没有阅读完,想下次继续接着阅读,可使用上方 "收藏到我的浏览器" 功能 和 "加入书签" 功能!
ignorant; extravagant; and abusing wits have pretended to indue the
state of man with wonders; differing as much from truth in nature as
Caesar's Commentaries differeth from the acts of King Arthur or Huon
of Bourdeaux in story。 For it is true that Caesar did greater things
than those idle wits had the audacity to feign their supposed
worthies to have done; but he did them not in that monstrous and
fabulous manner。
CAP。 11。
THE CHAPTER IMMEDIATELY FOLLOWING THE INVENTORY; BEING THE 11TH IN
ORDER; A PART THEREOF。
It appeareth then what is now in proposition not by general
circumlocution but by particular note。 No former philosophy varied
in terms or method; no new PLACET or speculation upon particulars
already known; no referring to action by any manual of practice; but
the revealing and discovering of new inventions and operations。 This
to be done without the errors and conjectures of art; or the length
or difficulties of experience; the nature and kinds of which
inventions have been described as they could be discovered; for your
eye cannot pass one kenning without further sailing; only we have
stood upon the best advantages of the notions received; as upon a
mount; to shew the knowledges adjacent and confining。 If therefore
the true end of knowledge not propounded hath bred large error; the
best and perfectest condition of the same end not perceived will
cause some declination。 For when the butt is set up men need not
rove; but except the white be placed men cannot level。 This
perfection we mean not in the worth of the effect; but in the nature
of the direction; for our purpose is not to stir up men's hopes; but
to guide their travels。 The fullness of direction to work and
produce any effect consisteth in two conditions; certainty and
liberty。 Certainty is when the direction is not only true for the
most part; but infallible。 Liberty is when the direction is not
restrained to some definite means; but comprehendeth all the means
and ways possible; for the poet saith well SAPIENTIBUS UNDIQUE LATAE
SUNT VIAE; and where there is the greatest plurality of change; there
is the greatest singularity of choice。 Besides as a conjectural
direction maketh a casual effect; so a particular and restrained
direction is no less casual than an uncertain。 For those particular
means whereunto it is tied may be out of your power or may be
accompanied with an overvalue of prejudice; and so if for want of
certainty in direction you are frustrated in success; for want of
variety in direction you are stopped in attempt。 If therefore your
direction be certain; it must refer you and point you to somewhat
which; if it be present; the effect you seek will of necessity follow;
else may you perform and not obtain。 If it be free; then must it
refer you to somewhat which if it be absent the effect you seek will
of necessity withdraw; else may you have power and not attempt。 This
notion Aristotle had in light; though not in use。 For the two
commended rules by him set down; whereby the axioms of sciences are
precepted to be made convertible; and which the latter men have not
without elegancy surnamed the one the rule of truth because it
preventeth deceit; the other the rule of prudence because it freeth
election; are the same thing in speculation and affirmation which we
now observe。 An example will make my meaning attained; and yet
percase make it thought that they attained it not。 Let the effect to
be produced be Whiteness; let the first direction be that if air and
water be intermingled or broken in small portions together; whiteness
will ensue; as in snow; in the breaking of the waves of the sea and
rivers; and the like。 This direction is certain; but very particular
and restrained; being tied but to air and water。 Let the second
direction be; that if air be mingled as before with any transparent
body; such nevertheless as is uncoloured and more grossly transparent
than air itself; that then etc。 as glass or crystal; being beaten to
fine powder; by the interposition of the air becometh white; the
white of an egg being clear of itself; receiving air by agitation
becometh white; receiving air by concoction becometh white; here you
are freed from water; and advanced to a clear body; and still tied to
air。 Let the third direction exclude or remove the restraint of an
uncoloured body; as in amber; sapphires; etc。 which beaten to fine
powder become white; in wine and beer; which brought to froth become
white。 Let the fourth direction exclude the restraint of a body more
grossly transparent than air; as in flame; being a body compounded
between air and a finer substance than air; which flame if it were
not for the smoke; which is the third substance that incorporateth
itself and dyeth the flame; would be more perfect white。 In all
these four directions air still beareth a part。 Let the fifth
direction then be; that if any bodies; both transparent but in an
unequal degree; be mingled as before; whiteness will follow; as oil
and water beaten to an ointment; though by settling the air which
gathereth in the agitation be evaporate; yet remaineth white; and the
powder of glass or crystal put into water; whereby the air giveth
place; yet remaineth white; though not so perfect。 Now are you freed
from air; but still you are tied to transparent bodies。 To ascend
further by scale I do forbear; partly because it would draw on the
example to an over…great length; but chiefly because it would open
that which in this work I determine to reserve; for to pass through
the whole history and observation of colours and objects visible were
too long a digression; and our purpose is now to give an example of a
free direction; thereby to distinguish and describe it; and not to
set down a form of interpretation how to recover and attain it。 But
as we intend not now to reveal; so we are circumspect not to mislead;
and therefore (this warning being given) returning to our purpose in
hand; we admit the sixth direction to be; that all bodies or parts of
bodies which are unequal equally; that is in a simple proportion; do
represent whiteness; we will explain this; though we induce it not。
It is then to be understood; that absolute equality produceth
transparence; inequality in simple order or proportion produceth
whiteness; inequality in compound or respective order or proportion
produceth all other colours; and absolute or orderless inequality
produceth blackness; which diversity; if so gross a demonstration be
needful; may be signified by four tables; a blank; a chequer; a fret;
and a medley; whereof the fret is evident to admit great variety。
Out of this assertion are satisfied a multitude of effects and
observations; as that whiteness and blackness are most incompatible
with transparence; that whiteness keepeth light; and blackness
stoppeth light; but neither passeth it; that whiteness or blackness
are never produced in rainbows; diamonds; crystals; and the like;
that white giveth no dye; and black hardly taketh dye; that whiteness
seemeth to have an affinity with dryness; and blackness with moisture;
that adustion causeth blackness; and calcination whiteness; that
flowers are generally of fresh colours; and rarely black; etc。 All
which I do now mention confusedly by way of derivation and not by way
of induction。 This sixth direction; which I have thus explained; is
of good and competent liberty for whiteness fixed and inherent; but
not for whiteness fantastical or appearing; as shall be afterwards
touched。 But first do you need a reduction back to certainty or
verity; for it is not all position or contexture of unequal bodies
that will produce colour; for AQUA FORTIS; oil of VITRIOL; etc。 more
manifestly; and many other substances more obscurely; do consist of
very unequal parts; which yet are transparent and clear。 Therefore
the reduction must be; that the bodies or parts of bodies so
intermingled as before be of a certain grossness or magnitude; for
the unequalities which move the sight must have a further dimension
and quantity than those which operate many other effects。 Some few
grains of saffron will give a tincture to a tun of water; but so many
grains of civet will give a perfume to a whole chamber of air。 And
therefore when Democritus (from whom Epicurus did borrow it) held
that the position of the solid portions was the cause of colours; yet
in the very truth of his assertion he should have added; that the
portions are required to be of some magnitude。 And this is one cause
why colours have little inwardness and necessitude with the nature
and proprieties of things; those things resembling in colour which
otherwise differ most; as salt and sugar; and contrariwise differing
in colour which otherwise resemble most; as the white and blue
violets; and the several veins of one agate or marble; by reason that
other virtues consist in more subtile proportions than colours do;
and yet are there virtues and natures which require a grosser
magnitude than colours; as well as scents and divers other require a
more subtile; for as the portion of a body will give forth scent
which is too small to be seen; so the portion of a body will shew
colours which is too small to be endued with weight; and therefore
one of the prophets with great elegancy describing how all creatures
carry no proportion towards God the creator; saith; THAT ALL THE
NATIONS IN RESPECT OF HIM ARE LIKE THE DUST UPON THE BALANCE; which
is a thing appeareth but weigheth not。 But to return; there resteth
a further freeing of this sixth direction; for the clearness of a
river or stream sheweth white at a distance; and crystalline glasses
deliver the face or any other object falsified in whiteness; and long
beholding the snow to a weak eye giveth an impression of azure rather
than of whiteness。 So as for whiteness in apparition only and
representation by the qualifying of the light; altering the
INTERMEDIUM; or affecting the eye itself; it reacheth not。 But you
must free your direction to the producing of such an incidence;
impression; or operation; as may cause a precise and determinate
passion of the eye; a matter which is much more easy t
快捷操作: 按键盘上方向键 ← 或 → 可快速上下翻页 按键盘上的 Enter 键可回到本书目录页 按键盘上方向键 ↑ 可回到本页顶部!
温馨提示: 温看小说的同时发表评论,说出自己的看法和其它小伙伴们分享也不错哦!发表书评还可以获得积分和经验奖励,认真写原创书评 被采纳为精评可以获得大量金币、积分和经验奖励哦!