PREFACE.

 X

done something, if not towards directly effecting
that object, at least towards opening the way
for subsequent endeavours. If he has not sueceeded
 in putting all his propositions in a clear
light, and finally settling the various controverted
 questions which he brings under review,
yet he may hope that he has introduced them
in such a manner as will excite in others the

interest and attention requisite for their ultjmate
 determination. Free, on his own part,
from particular attachment to any of the positions
 which he has maintained, although impressed
 with that clear conviction of their
soundness, without which it would be absurd
to intrude them on public notice; and sensible
of the thousand ways in which error imposes
itself on the understanding in the character of
truth, he will be glad of an opportunity of reconsidering
 his opinions, under the guidance of
2 mind which has reached a higher point of