Science is a way to not fool ourselves.
As agonizing a disease as cancer is, I do not think it can be said that our civilization is threatened by it. ... But a very plausible case can be made that our civilization is fundamentally threatened by the lack of adequate fertility control. Exponential increases of population will dominate any arithmetic increases, even those brought about by heroic technological initiatives, in the availability of food and resources, as Malthus long ago realized.
Interpretation
What this quote means
While cancer is a horrible disease, the true threat to civilization lies in uncontrolled population growth and inadequate fertility control.
In this quote, Carl Sagan emphasizes that although cancer poses significant challenges to individuals and families, it is not the primary threat to civilization as a whole. Instead, he warns that unchecked population growth will outpace improvements in food and resource availability, echoing Malthus's principles. The focus on inadequate fertility control suggests a need for a more sustainable approach to managing population numbers to avert potential crises in resource distribution and food security.
Themes
In practice
Example use cases
In a presentation about global health, one could use this quote to highlight the importance of population control.
More from Carl Sagan
All quotes →In more than one respect, the exploring of the Solar System and homesteading other worlds constitutes the beginning, much more than the end, of history.
How smart does a chimpanzee have to be before killing him constitutes murder?
The hole in the ozone layer is a kind of skywriting. At first it seemed to spell out our continuing complacency before a witch's brew of deadly perils. But perhaps it really tells of a newfound talent to work together to protect the global environment.
There is a reward structure in science that is very interesting: Our highest honors go to those who disprove the findings of the most revered among us. So Einstein is revered not just because he made so many fundamental contributions to science, but because he found an imperfection in the fundamental contribution of Isaac Newton.
The simplest thought, like the concept of the number one, has an elaborate logical underpinning.
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The more I work with the powers of Nature, the more I feel God's benevolence to man; the closer I am to the great truth that everything is dependent on the Eternal Creator and Sustainer; the more I feel that the so-called science, I am occupied with, is nothing but an expression of the Supreme Will, which aims at bringing people closer to each other in order to help them better understand and improve themselves.
In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.
More stars in the north are seen not to set, while in the south certain stars are no longer seen to rise.