S the following sheets contain reflections whichare the produce
of many years enquiry: so, I hope, my reader will not be surprized, or make it a matter of complaint, if he should find me in one part to differ from myself in another ; but would rather think it strange, if I should not, seeing it is what men of free enquiry are always liable to; because those evidences, which are the ground of their persuasions, are, by such enquiry, liable to be differently perceived by them. A
proper and well-grounded assent to the truth of any propofition, is founded on a perception of the evidence, upon which the truth of that proposition is supposed to depend : and, therefore, as our perception of such evidence is, in many cases, liable to alter and change; that is; what we perceive to
be conclusive to day may appear otherwise to morrow; fo our opinions are liable to alter and change likewise. And as I have, in the course of my enquiries, had a strict regard to truth, and this has led me fometimes to differ from myself, by a change of my opinions : fo I am ready to retract and give up my opinion I have embraced or maintained, when such farther evidence shall appear, as renders it just and proper so to do.