The natural inequality of the two powers of population and of production in the earth, and that great law of our nature which must constantly keep their efforts equal, form the great difficulty that to me appears insurmountable in the way to the perfectibility of society.
Thomas MalthusThe great and unlooked for discoveries that have taken place of late years have all concurred to lead many men into the opinion that we were touching on a period big with the most important changes.
Thomas MalthusWhere are we to look for the consumption required but among the unproductive labourers of Adam Smith?.
Thomas MalthusIt is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment.
Thomas Malthus