Real science exists, then, only from the moment when a phenomenon is accurately defined as to its nature and rigorously determined in… — Claude Bernard Copy Share Image
The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to… — Claude Bernard Copy Share Image
Effects vary with the conditions which bring them to pass, but laws do not vary. Physiological and pathological states are ruled by… — Claude Bernard Copy Share Image
All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the… — Claude Bernard Copy Share Image
As soon as the circumstances of an experiment are well known, we stop gathering statistics. ... The effect will occur always without… — Claude Bernard Copy Share Image
The constancy of the internal environment is the condition for free and independent life: the mechanism that makes it possible is that… — Claude Bernard Copy Share Image
Proof that a given condition always precedes or accompanies a phenomenon does not warrant concluding with certainty that a given condition is… — Claude Bernard Copy Share Image
In every enterprise ... the mind is always reasoning, and, even when we seem to act without a motive, an instinctive logic still directs… — Claude Bernard Copy Share Image
Descriptive anatomy is to physiology what geography is to history, and just as it is not enough to know the typography of a country… — Claude Bernard Copy Share Image
Mediocre men often have the most acquired knowledge. It is in the darker. It is in the darker regions of science that great men… — Claude Bernard Copy Share Image
Ardent desire for knowledge, in fact, is the one motive attracting and supporting investigators in their efforts; and just this knowledge, really grasped and… — Claude Bernard Copy Share Image
If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in… — Claude Bernard Copy Share Image
Even mistaken hypotheses and theories are of use in leading to discoveries. This remark is true in all the sciences. The alchemists founded chemistry… — Claude Bernard Copy Share Image
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… — Claude Bernard Copy Share Image
A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes. — Claude Bernard Copy Share Image
We must remain, in a word, in an intellectual disposition which seems paradoxical, but which, in my opinion, represents the true mind of the… — Claude Bernard Copy Share Image
The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and… — Claude Bernard Copy Share Image
