It is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment. - Thomas Robert Malthus

The immediate cause of the increase of population is the excess of the births above deaths; and the rate of increase, or the period of doubling, depends upon the proportion which the excess of the births above the deaths bears to the population.

The labouring poor, to use a vulgar expression, seem always to live from hand to mouth. Their present wants employ their whole whole attention, and they seldom think of the future. Even when they have an opportunity of saving they seldom exercise it, but all that is beyond their present neccessities goes, generally speaking, to the ale house.

The power of population is so superior to the power in the earth to produce subsistence for man, that premature death must in some shape or other vist the human race.