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"Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio."
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"The divergence of songs in the new population away from those in the progenitor population would only be prevented if these processes were balanced by repeated immigration and subsequent breeding: song flow."
"Our population is headed for a stable plateau, which means an aging population."
"Licences to have babies incidentally is something that I got in trouble for some years ago for suggesting even in Canada that this might be necessary at some point, at least some restriction on the right to have a child."
"The optimum population is, then, less than the maximum."
"We are 5 percent of the global population and consume a third of the total resources - on some level we should all feel guilty relative to the world."
"In order to stabilize world population, we must eliminate 350,000 per day."
"You wouldn't believe how the town was named for me. I was met by the whole population, headed by the mayor."
"Still, whether we like it or not, the task of speeding up the decrease of the human population becomes increasingly urgent."
"Do not compute the totality of your poultry population until all the manifestations of incubation have been entirely completed."
"I have just joined the Board of the Population Institute because I am convinced that early stabilization of the world's population is important for the attainment of this objective."
Explore more quotes by Thomas Malthus
"Each pursues his own theory, little solicitous to correct or improve it by an attention to what is advanced by his opponents."
"In a state therefore of great equality and virtue, where pure and simple manners prevailed, the increase of the human species would evidently be much greater than any increase that has been hitherto known."
"The constant effort towards population, which is found even in the most vicious societies, increases the number of people before the means of subsistence are increased."
"A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted."
"The power of population is indefinitely greater than the power in the earth to produce subsistence for man."
"The great and unlooked for discoveries that have taken place of late years have all concurred to lead many men into the opinion that we were touching on a period big with the most important changes."
"It is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment."
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