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# Title: An Essay Concerning Humane Understanding (shelfmarks Leibn. Marg. 38; ZEN Leibn. Marg. 38)
# Folio 329, page id 778263916:0345
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Chap. LLILL. Constuerations concerning our lnoiledee
and Consequences, as truch as he pleases, he ill by cheir ASictence, L
suppose, scarce ever corne to know thac che square ot the FTyporienculon
in a right ansled Triansle, is equal to the squares of the tro ocher sides.
The RnoWledge, chac the Whole is equal to aIL iEs ParES, and is rou tale
Equal from F. qual, the remainder will De Equal, (Sc. helped him not, 
prelume, to chis Demonstration: And a Man may, Lchink, pore lOne
enourh on chose Axioms, without ever secing one jor themore of mathe.
matical Truchs. Ther. have been discovered by ehe Thoughes otlervays
applicd: The Nind hac orter OEjests, other Viens betore it, tar ditte.
rent trom chole Maxims, Wrhen ic tirst sot the Hnom ledse ot luch kind oF
Fruchs in Machemarieks, Which Men Well enouxh acquainted with those
received Axioms, but ignorant oF their Mechod, Who tirst madle thele De-
moystrarions, can never sufficiently admire. And NHO LNOWS NHaE MC-
thocs mar hereatter be found out to entarse our Rnomledge in octier
Things, as Well as chat oF alsebra in Mathemaricks, Wrtich so readils
Cncs out Ideas oF Duantities ro mealure others by, Wwhose Rquality or Pro-
portion re could ocherrite very hardly, or, Perhaps, never come to
LEnOW.
8. 2.C
CH A C. XIII.
Some farcher Consuderations concernins our Lnomledee.
Ur Rnooledse, as in other Thinss, Co in this, has a great Con-
formity ich our Siete, chat it 15 neither wholly necessary, nor
wtolly voluntary. IE our Knou ledse vere altogether neceltary, all NenS
Rnomledse ould noc only bealilce, bur every Man iould kno aIl that
is Brorable; and if it evere rholly voluncary, some Nen (0 lictle regard
or value it, that ther mould have extreme little, or nonc at aII. Nen
that have senles, cannor chuse bur receive lome Ideas by them; and it
tler have Memory, they cannor but retain lome ot them; and it
they have any distinguisring Faculer, cannot bur perceive the Agreement,
or Dilaoreement of lome of themone with anocher: AS hechat has LYes,
it he will oven ehem by daz, cannot but sec lome Objecs, and perceire a
difference in them. Bur though a Man with his Fses open in thc Lisht,
cannot but lec: vet there be certain Objecto, rhich he mar chuse rhe-
ther he will turn his fires to; there mas be in his reach a Book contai-
nins rictures, and Discourses, capable to delighe, or instruct him, ertieh
vec he may never have the Will to open, never tatre the Pains to
looH intO.
8. 2. Fhere is allo another thins in a Mans Pouer, andchat is, thoueh
tie turn his Eyes sometimes torards an Object, set he may chuse Whether
he willincently surves it, and with an accurare scarehi, endeavour eo ob
serre all thac is vilible in it. But yet What he does sec, he cannot lec
ocherrise chan he does: It depends noc on his Will to sec that Blactes
erhrich appears Vellor; nor to persuade himsele, thac erhat actually
Scalds him, scels cold: The Farth rill noc appear painted with EIOWeFS,
nor the Fields covered with Verdure, whenever he hasa Mindroit; inthe
cold Wincer, he cannor help secins it white and hoary, it he will look
abroad. Tult thus is ic with our Onderstandins, all that is voluntary in
oux Rnomledoe, is the emplorine, or wich holdins any ol our Faculties
trom chis ortlat (ort Oi Obiects, and a more, or lels accurare surver et
Them.