I hope no man takes what I said about the living and dieing of men for mathematical demonstration.
William PettyThat some are poorer than others, ever was and ever will be: And that many are naturally querulous and envious, is an Evil as old as the World.
William PettyIt were good to know how much hay an acre of every sort will bear; how many cattle the same weight of each sort of hay will feed and fatten; what quantity of grain and other commodities the same acre will bear in one, three or seven years; unto what use each soil is proper; all which particulars I call intrinsic value, for there is also another value merely accidental or extrinsic.
William Petty