The method I take to do this is not yet very usual; for instead of using only comparative and superlative Words, and intellectual Arguments, I have taken the course (as a Specimen of the Political Arithmetic I have long aimed at) to express myself in Terms of Number, Weight, or Measure; to use only Arguments of Sense, and to consider only such Causes, as have visible Foundations in Nature.
William PettyA thousand acres that can feed a thousand souls is better than ten thousand acres of no more effect.
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 PettyI hope no man takes what I said about the living and dieing of men for mathematical demonstration.
William Petty