Thus the powers of all have their full effect; and hence arise improvements in all the conveniences of life, and in every branch of knowledge. In this state of things, it requires but a few years to comprehend the whole preceding progress of any one art or science; and the rest of a man's life, in which his faculties are the most perfect, may be given to the extension of it. If, by this means, one art or science should grow too large for an easy comprehension, in a moderate space of time, a commodious subdivision will be made. Thus all knowledge will be subdivided and extended; and knowledge, as Lord Bacon observes, being power, the human powers will, in fact, be enlarged; nature, including both its materials, and its laws, will be more at our command; men will make their situation in this world abundantly more easy and comfortable; they will probably prolong their existence in it, and will grow daily more happy, each in himself, and more able (and, I believe, more disposed) to communicate happiness to others. Thus, whatever was the be-
ginning