XLIII.

_MADAM,_

Your _Author_ is pleased to relate a story[1] of one that died

suddenly, and being dissected, there was not the least sign of decay

or disorder found in his body. But I cannot add to those that wonder,

when no sign of distemper is found in a man's body after he is dead;

because I do not believe, that the subtillest, learnedst, and most

practised Anatomist, can exactly tell all the Interior Government

or motions, or can find out all obscure and invisible passages in a

mans body; for concerning the motions, they are all altered in death,

or rather in the dissolution of the animal figure; and although the

exterior animal figure or shape doth not alter so soon, yet the animal

motions may alter in a moment of time; which sudden alteration may

cause a sudden death, and so the motions being invisible, the cause

of death cannot be perceived; for no body can find that which is not

to be found, to wit, animal motions in a dead man; for Nature hath

altered these motions from being animal motions to some other kind

of motions, she being as various in dissolutions, as in productions,

indeed so various, that her ways cannot be traced or known thorowly

and perfectly, but onely by piece-meals, as the saying is, that is,

but partly: Wherefore man can onely know that which is visible, or

subject to his senses; and yet our senses do not always inform us

truly, but the alterations of grosser parts are more easily known, then

the alterations of subtil corporeal motions, either in general, or in

particular; neither are the invisible passages to be known in a dead

Carcass, much less in a living body. But, I pray, mistake me not, when

I say, that the animal motions are not subject to our exterior senses;

for I do not mean all exterior animal motions, nor all interior animal

motions; for though you do see no interior motion in an animal body,

yet you may feel some, as the motion of the Heart, the motion of the

Pulse, the motion of the Lungs, and the like; but the most part of

the interior animal motions are not subject to our exterior senses;

nay, no man, he may be as observing as he will, can possibly know by

his exterior senses all the several and various interior motions in

his own body, nor all the exterior motions of his exterior parts: and

thus it remains still, that neither the subtillest motions and parts

of matter, nor the obscure passages in several Creatures, can be known

but by several parts; for what one part is ignorant of, another part

is knowing, and what one part is knowing, another part is ignorant

thereof; so that unless all the Parts of Infinite Matter were joyned

into one Creature, there can never be in one particular Creature a

perfect knowledg of all things in Nature. Wherefore I shall never

aspire to any such knowledg, but be content with that little particular

knowledg, Nature has been pleased to give me, the chief of which is,

that I know my self, and especially that I am,

Madam,

_Your constant Friend,_

_and faithful Servant._

[1] _Ch._ 61. called, _The Preface_.

Philosophical Letters: or, modest Reflections upon some Opinions in Natural Philosophy · 第 132 / 169 题