Tout est poison, rien n'est poison, tout est une question de dose. Everything is poisonous, nothing is poisonous, it is all a matter of dose.
Claude BernardRead
We must alter theory to adapt it to nature, but not nature to adapt it to theory.
Interpretation
Theories should be adjusted to reflect natural phenomena rather than forcing nature to fit our theories.
Claude Bernard emphasizes the importance of aligning scientific theories with the realities of nature. Instead of trying to reshape natural occurrences to fit pre-existing theories, we should develop our understanding of theories based on observations and facts derived from nature itself. This approach fosters a more accurate comprehension of the scientific world.
In practice
During a scientific conference discussing the latest research findings.
Tout est poison, rien n'est poison, tout est une question de dose. Everything is poisonous, nothing is poisonous, it is all a matter of dose.
When a physician is called to a patient, he should decide on the diagnosis, then the prognosis, and then the treatment. ... Physicians must know the evolution of the disease, its duration and gravity in order to predict its course and outcome. Here statistics intervene to guide physicians, by teaching them the proportion of mortal cases, and if observation has also shown that the successful and unsuccessful cases can be recognized by certain signs, then the prognosis is more certain.
The goal of scientific physicians in their own science ... is to reduce the indeterminate. Statistics therefore apply only to cases in which the cause of the facts observed is still indeterminate.
Theories are like a stairway; by climbing, science widens its horizon more and more, because theories embody and necessarily include proportionately more facts as they advance.
True science teaches us to doubt and, in ignorance, to refrain.
Now, a living organism is nothing but a wonderful machine endowed with the most marvellous properties and set going by means of the most complex and delicate mechanism.
Nowhere in space will we rest our eyes upon the familiar shapes of trees and plants, or any of the animals that share our world. Whatsoever life we meet will be as strange and alien as the nightmare creatures of the ocean abyss, or of the insect empire whose horrors are normally hidden from us by their microscopic scale.
My ambition was to bring to bear on medicine a chemical approach. I did that by chemical manipulation of viruses and chemical ways of thinking in biomedical research.
It's a pity that nobody has found an exploding black hole. If they had, I would have won a Nobel prize.
Any difficulties which the world faces today will be as nothing compared to the full effects which global warming will have on the world-wide economy.
The recent developments in cosmology strongly suggest that the universe may be the ultimate free lunch.
In fact, nothing in science as a whole has been more firmly established by interwoven factual information, or more illuminating than the universal occurrence of biological evolution. Further, few natural processes have been more convincingly explained than evolution by the theory of natural selection, or as it has been popularly called, Darwinism.
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