BOOK I PART II
them, and in all its discourses and reasonings
to use the one for the other. This phaenomenon
occurs on so many occasions, and is of such
consequence, that I cannot forbear stopping a
moment to examine its causes. I shall only
premise, that we must distinguish exactly be-
twixt the phaenomenon itself, and the causes,
which I shall assign for it; and must not imag-
ine from any uncertainty in the latter, that the
former is also uncertain. The phaenomenon
may be real, though my explication be chimeri-
cal. The falshood of the one is no consequence
of that of the other; though at the same time
we may observe, that it is very natural for us to
draw such a consequence; which is an evident
instance of that very principle, which I endeav-
our to explain.
When I received the relations of resem-