[P]opulation, when unchecked, goes on doubling itself every twenty-five years, or increases in a geometrical ratio. . . … - Thomas Malthus

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The fountain of youth is like the monkeys paw in the W. W. Jacobs story. It never ends well.

Thomas Malthus

[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.

Arithmetical, Food, Mean, Science, Subsistence, Unchecked

Same Author Quotes

Instead of recommending cleanliness to the poor, we should encourage contrary habits. In our towns we should make the streets narrower, crowd more people into the houses, and court the return of the plague.

Crowds, Habits, House, People, Streets, Towns

The most baleful mischiefs may be expected from the unmanly conduct of not daring to face truth because it is unpleasing.

Baleful, Courage, Face, Integrity, May, Mischiefs

Population, when unchecked, increases in a geometrical ratio. Subsistence increases only in an arithmetical ratio. A slight acquaintance with numbers will shew the immensity of the first power in comparison of the second.

Numbers, Population, Science, Slight, Unchecked

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

Food, Food Supply, Population, Rapidly, World

I think it will be found that experience, the true source and foundation of all knowledge, invariably confirms its truth.

Economy, Foundation, Invariably, Source, Thinking, Truth