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

I feel no doubt whatever that the parish laws of England have contributed to raise the price of provisions and to lower the real price of labour.

The passion between the sexes has appeared in every age to be so nearly the same, that it may always be considered, in algebraic language as a given quantity.

The science of political economy is essentially practical, and applicable to the common business of human life. There are few branches of human knowledge where false views may do more harm, or just views more good.

Population regulates itself by the funds which are to employ it, and therefore always increases or diminishes with the increase or the diminution of capital. Every reduction of capital is therefore necessarily followed by a less effective demand for corn, by a fall in price, and by a diminished cultivation.

Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.

Thirty or forty proprietors, with incomes answering to between one thousand and five thousand a year, would create a much more effectual demand for the necessaries, conveniences, and luxuries of life, than a single proprietor possessing a hundred thousand a year.