BOOK II PART I
SECTIONIV. OF THERELATIONS OF
IMPRESSIONS ANDIDEAS
Thus we have established two truths with-
out any obstacle or difficulty, thatit is from nat-
ural principles this variety of causes excites pride
and humility, and thatit is not by a different prin-
ciple each different cause is adapted to its passion,
and thatit is not by a different principle each differ-
ent cause is adapted to its passion. We shall now
proceed to enquire how we may reduce these
principles to a lesser number, and find among
the causes something common, on which their
influence depends.
In order to this we must reflect on cer-
tain properties of human nature, which though
they have a mighty influence on every opera-
tion both of the understanding and passions,