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.
Similar quotes
Science, at bottom, is really anti-intellectual. It always distrusts pure reason, and demands the production of objective fact.
It is hard to think of practical applications of the black hole. Because practical applications are so remote, many people assume we should not be interested. But this quest to understand the world is what defines us as human beings.
Science does not promise absolute truth, nor does it consider that such a thing necessarily exists. Science does not even promise that everything in the Universe is amenable to the scientific process.
More women should actively participate in space flight. There are many well educated women working in the space industry; they are very good candidates.
Reply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe.
The 'medical examination' to which abductees are said to be subjected, often accompanied by sadistic sexual manipulation, is reminiscient of the medieval tales of encounters with demons. It makes no sense in a sophisticated or technical framework: any intelligent being equipped with the scientific marvels that UFOs possess would be in a position to achieve any of these alleged scientific objectives in a shorter time and with fewer risks.