William Petty Quotes

Instead of using only comparative Words and intellectual Arguments, I have taken the course…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.

Labour is the Father and active principle of Wealth, as lands are the Mother.

If a man bring to London an ounce of Silver out of the Earth in Peru in the same time that he can produce a bushel of Corn, then one is the natural price of the other.