The constant effort towards population, which is found even in the most vicious societies, increases the number of people before the means of subsistence are increased.

The proposition of Mr. Ricardo, which states that a rise in the price of labour lowers the price of a large class of commodities, has undoubtedly a very paradoxical air; but it is, nevertheless, true, and the appearance of paradox would vanish, if it were stated more naturally and correctly.

The ordeal of virtue is to resist all temptation to evil.

[P]opulation, when unchecked, goes on doubling itself every twenty-five years, or increases in a geometrical ratio. ... [T]he means of subsistence, under circumstances the most favorable to human industry, could not possibly be made to increase faster than in an arithmetical ratio.

To remedy the frequent distresses of the common people, the poor laws of England have been instituted; but it is to be feared that though they may have alleviated a little the intensity of individual misfortune, they have spread the general evil over a much larger surface.

No move towards the extinction of the passion between the sexes has taken place in the five or six thousand years that the world has existed.

The prodigious waste of human life occasioned by this perpetual struggle for room and food, was more than supplied by the mighty power of population, acting, in some degree, unshackled, from the constant habit of emigration.