To estimate the value of Newton's discoveries, or the delight communicated by Shakespeare and Milton, by the price at which their works have sold, would be but a poor measure of the degree in which they have elevated and enchanted their country; nor would it be less grovelling and incongruous to estimate the benefit which the country has derived from the Revolution of 1688, by the pay of the soldiers, and all other payments concerned in effecting it.
Thomas Robert Malthus (1836). “Principles of political economy considered with a view to their practical application”, p.49