Had population and food increased in the same ratio, it is probable that man might never have emerged from the savage state.
Thomas MalthusThe 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 MalthusNo limits whatever are placed to the productions of the earth; they may increase forever.
Thomas Malthus