Nature herself in times of great poverty or bad climatic conditions, as well as poor harvest, intervenes to restrict the increase of population of certain countries or races; this, to be sure, by a method as wise as it is ruthless.

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.

The perpetual struggle for room and food.

No limits whatever are placed to the productions of the earth; they may increase forever.

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

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.

Evil exists in the world not to create despair but activity.