Thomas Malthus：An Essay on the Principle of Population, Excerpt 30

Among plants and animals the view of the subject is simple. They are all impelled by a powerful instinct to the increase of their species, and this instinct is interrupted by no reasoning or doubts about providing for their offspring. Wherever therefore there is liberty, the power of increase is exerted, and the superabundant effects are repressed afterwards by want of room and nourishment, which is common to animals and plants, and among animals by becoming the prey of others.

Source： https://www.gutenberg.org/ebooks/4239
Locator：Excerpt 30 · Verified：2026-10-19 · Verification：Short excerpt

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