In the philosophic sense, observation shows and experiment teaches. — Claude Bernard Copy Share Image
The experimenter who does not know what he is looking for will not understand what he finds. — Claude Bernard Copy Share Image
We must never make experiments to confirm our ideas, but simply to control them. — Claude Bernard Copy Share Image
The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he… — Claude Bernard Copy Share Image
A great discovery is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows… — 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… — Claude Bernard Copy Share Image
“The true worth of a researcher lies in pursuing what he did not seek in his experiment as well as what he… — Claude Bernard Copy Share Image
It has often been said that, to make discoveries, one must be ignorant. This opinion, mistaken in itself, nevertheless conceals a truth.… — Claude Bernard Copy Share Image
Men who have excessive faith in their theories or ideas are not only ill prepared for making discoveries; they also make very… — Claude Bernard Copy Share Image
To be worthy of the name, an experimenter must be at once theorist and practitioner. While he must completely master the art… — Claude Bernard Copy Share Image
When entering on new ground we must not be afraid to express even risky ideas so as to stimulate research in all… — Claude Bernard Copy Share Image
The better educated we are and the more acquired information we have, the better prepared shall we find our minds for making… — Claude Bernard Copy Share Image
In these researches I followed the principles of the experimental method that we have established, i.e., that, in presence of a well-noted,… — Claude Bernard Copy Share Image
Man does not limit himself to seeing; he thinks and insists on learning the meaning of phenomena whose existence has been revealed… — Claude Bernard Copy Share Image
It is impossible to devise an experiment without a preconceived idea; devising an experiment, we said, is putting a question; we never… — 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
