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All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

Claude Bernard

We must never make experiments to confirm our ideas, but simply to control them.
CLAUDE BERNARD

Confirm Control Experiment Simplicity
Put off your imagination, as you put off your overcoat, when you enter the laboratory. Put it on again, as you put on your overcoat, when you leave.
CLAUDE BERNARD

Imagination Leaving Science Yourself
A discovery is generally an unforeseen relation not included in theory.
CLAUDE BERNARD

Discover General Theory
Experiment is fundamentally only induced observation.
CLAUDE BERNARD

Experiment Fundamental Observation
In the philosophic sense, observation shows and experiment teaches.
CLAUDE BERNARD

Experiment Observation Philosophy Teaching
The doubter is a true man of science: he doubts only himself and his interpretations, but he believes in science.
CLAUDE BERNARD

Believe Doubt Man Science True
The minds that rise and become really great are never self-satisfied, but still continue to strive.
CLAUDE BERNARD

Greatness Mindset Rise Satisfaction Strive
When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.
CLAUDE BERNARD

Abandonment Acceptance Believe Conflict Fact Intuition Support Theory
The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and happiness.
CLAUDE BERNARD

Constitute End Fact Happiness Hard Time Knowledge
We must keep our freedom of mind, and must believe that in nature what is absurd, according to our theories, is not always impossible.
CLAUDE BERNARD

Absurd Believe Freedom Impossible Mindset Nature
Everything is poisonous, nothing is poisonous, it is all a matter of dose.
CLAUDE BERNARD

Amount Poison Portion
We must alter theory to adapt it to nature, but not nature to adapt it to theory.‎
CLAUDE BERNARD

Adapt Nature Theory
Well-observed facts, though brought to light by passing theories, will never die; they are the material on which alone the house of science will at last be built.
CLAUDE BERNARD

Built Death Fact Material Observation Science
True science teaches us to doubt and, in ignorance, to refrain.
CLAUDE BERNARD

Doubt Ignorance Science Teaching True
The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.
CLAUDE BERNARD

Experiment Himself Seek True Worth
But while I accept specialization in the practice, I reject it utterly in the theory of science.
CLAUDE BERNARD

Acceptance Myself Practice Science Theory

All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

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All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

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