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The moon is not kept in her orbit round the earth, nor the earth in her orbit round the sun, by a force that varies merely in the inverse ratio of the squares of the distances.

— Thomas Robert Malthus An Essay on The Principle of Population (1798)

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More quotes by Thomas Robert Malthus

Population, when unchecked, increases in a geometrical ratio, Subsistence, increases only in an arithmetical ratio.

An Essay on The Principle of Population (1798)

The greatest talents have been frequently misapplied and have produced evil proportionate to the extent of their powers.

An Essay on The Principle of Population (1798)

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

An Essay on The Principle of Population (1798)

Had population and food increased in the same ratio, it is probable that man might never have emerged from the savage state.

An Essay on The Principle of Population (1798)

In general it may be said that demand is quite as necessary to the increase of capital as the increase of capital is to demand.

Principles of Political Economy (1836)

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