It is a mere futile process to exchange one set of commodities for another, if the parties; after this new distribution of goods has taken place, are not better off than they were before.
Thomas MalthusA great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.
Thomas MalthusPopulation, when unchecked, increases in a geometrical ratio. Subsistence increases only in an arithmetical ratio. A slight acquaintance with numbers will shew the immensity of the first power in comparison of the second.
Thomas Malthus