Supply and Demand
Note to the Law & Governments: Labour & Riches by John Ruskin

"Supply-and-demand,—alas! For what noble work was there ever any audible 'demand' in that poor sense?" ("Past and Present"). Nay, the demand is not loud even for ignoble work. See "Average earnings of Betty Taylor", in Times, of 4th February, of this year (1863):

"Worked from Monday morning at 8 a.m., to Friday night at 5.30 p.m., for 1s. 5½d."—Laissez faire.