When Grammar Should Be Taught?

which shall pretend to give us a body of natural philosophy from the first principles of bodies in general, yet the incomparable Mr. Newton has shown, how far mathematics applied to some parts of nature may, upon principles that matter of fact justify, carry us in the knowledge of some, as I may so call them, particular provinces of the incomprehensible universe. And if others could give us so good and clear an account of other parts of nature, as he has of this our planetary world, and the most considerable phenomena observable in it, in his admirable book, Philosophiae Naturalis Principia Mathematica , we might in time hope to be furnished with more true and certain knowledge in several parts of this stupendous machine, than hitherto we could have expected. And though there are very few that have mathematics enough to understand his demonstrations, yet the most accurate mathematicians who have examined them allowing them to be such, his book will deserve to be read, and give no small light and pleasure to those, who, willing to understand the motions, properties, and operations of the great masses of matter, in this our solar system, will but carefully mind his conclusions, which may be depended on as propositions well proved.