The world's population will multiply more rapidly than the available food supply.

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.

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

A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.

It is a mere futile process to exchange one set of commodities for another, if the parties; after this new distribution of goods has taken place, are not better off than they were before.

If one fourth of the capital of a country were suddenly destroyed, or entirely transferred to a different part of the world, without any other cause occurring of a diminished demand for commodities, this scantiness of capital would certainly occasion great inconvenience to consumers, and great distress among the working classes; but it would be attended with great advantages to the remaining capitalists.

Man cannot live in the midst of plenty.