First Sentence

"EVERY one who knows what natural philofophy is, or how it proceeds in its enquiries will eafily conceive what moral philofophy muft mean; and how it likewife ought to be purfued: for all enquiries into fact, reality, or any part of nature muft be fet about, and carried on in the fame way; and an enquiry into human nature is as much an enquiry into fact, as any queftion about the frame and texture (for inftance) of any plant, or of the human body."