A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.
Thomas MalthusThe most effectual encouragement to population is, the activity of industry, and the consequent multiplication of the national products.
Thomas MalthusIt has been said, and perhaps with truth, that the conclusions of Political Economy partake more of the certainty of the stricter sciences than those of most of the other branches of human knowledge.
Thomas MalthusWhere are we to look for the consumption required but among the unproductive labourers of Adam Smith?.
Thomas Malthus