Environmental Quote by Thomas Malthus

Population, when unchecked, increases in a geometrical ratio.

— Thomas Malthus

In my lifetime, the population of the world has doubled.

— Dallas Campbell

In the last 200 years the population of our planet has grown exponentially, at a rate of 1.9% per year. If it continued at…

— Stephen Hawking

Population, when unchecked, increases in a geometrical ratio. Subsistence increases only in an arithmetical ratio. A slight acquaintance with numbers will shew the immensity…

— Thomas Malthus

Human beings, because we're so clever, have removed every single one of those population limiting factors... So nothing controls our increase in numbers except…

— David Attenborough

If the children already born each have only two children themselves ... in twenty-seven to thirty-five years the population of the world will double.

— Robert Bork

[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…

— Thomas Malthus

The immediate cause of the increase of population is the excess of the births above deaths; and the rate of increase, or the period…

— Thomas Malthus

“.."consider this. It took the earth's population thousand of years-from the early dawn of man all the way to the early 1800s-to reach one…

— Dan Brown

Growth, growth, growth -- that's all we've known . . . World automobile production is doubling every 10 years; human population growth is like…

— M. King Hubbert

“11. In 2017, the population of the USA increases by one person every 12 seconds.”

— Lena Shaw

One always returns to the fact that there are just too many of us, the population continues to rise and it's unsustainable

— Jeremy Irons