It 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 PettyA thousand acres that can feed a thousand souls is better than ten thousand acres of no more effect.
William PettyI hope no man takes what I said about the living and dieing of men for mathematical demonstration.
William PettyAn house is of a double nature, viz., one, wherein it is a way and means of expence, the other as it is an instrument and tool of gain.
William PettyRaising of money may indeed change the species, but with so much loss as the foreign pieces were raised unto, above their intrinsick value.
William Petty