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# Title: Wherein the chief Causes of Error and Difficulty in the Sciences, with the Grounds of Scepticism, Atheism, and Irreligion, are inquir'd into (shelfmark Leibn. Marg. 52)
# Folio 20, page id 797331344:0032
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Introduction.
to look a licele into his omn Thoughs
and there cey Whether hehas, or can at-
tain eo hare, an Idca thac Mall corre-
spond with che description chat is herc
siren oF che General Idea ot a Triangle,
avtrich 1S, neither Oblique nor Rectanole,
Fiquilaterat, Lquicrural nor Scalenon, but
alt and none of these at once?
5 24. Much is here said of the Diti-
culer chac abstraet Ideas carey wich
them, and che Pams and Still requIsIte
co the tormine chem. And it iS On aII
Flands aorced thac chere is necd ot great
Toil and Labour ot cheMind, tOFman
cipatcour Thonghes from paticular Ob.
jects, and caise them to those Sublime
Speculations thac are convertant about
abscract Idcas. From all irtrich che na-
cural Consequence Moud seem to bC,
thac (0 Disticule a thing as che formino
absracc Idcas Wras notnecessarr ForCom
munication, Wtuch is (0 caly and tami
liar Eo alI TOrtS OF Men. But We arc told
it ther scem obrious andealr io GTrown
3
Men, Lis onty because by constant and fa-
miliar use they are made so. Noir Lroud
Tair