The Wealth of Nations by Part 4 Chapter 9 Page 35

or less upon the share which ought properly to belong to this productive class.

Every such encroachment, every violation of that natural distribution, which the most perfect liberty would establish, must, according to this system, necessarily degrade more or less, from one year to another, the value and sum total of the annual produce, and must necessarily occasion a gradual declension in the real wealth and revenue of the society; a declension of which the progress must be quicker or slower, according to the degree of this encroachment, according as that natural distribution which the most perfect liberty would establish is more or less violated. Those subsequent formularies represent the different degrees of declension which, according to this system, correspond to the different degrees in which this natural distribution is violated.