The Original] of them all, is that which we call sense; (for there is no conception in a mans mind, which hath not at first, totally, or by parts, been begotten upon the organs of Sense.) The rest are derived from that original]. To know the natural] cause of Sense, is not very necessary to the business now in hand; and I have else-where written of the same at large. Nevertheless, to fill each part of my present method, I will briefly deliver the same in this place.