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The experimenter who does not know what he is looking for will not understand what he finds.

Claude Bernard

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
Hatred is the most clear- sighted, next to genius.
CLAUDE BERNARD

Clear Genius Hate
Experiment is fundamentally only induced observation.
CLAUDE BERNARD

Experiment Fundamental Observation
The terrain is everything; the germ is nothing.
CLAUDE BERNARD

Germs Insect Land Terrain
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.
CLAUDE BERNARD

Delicate Live Mechanism Organism Property Wonderful
When entering on new ground we must not be afraid to express even risky ideas so as to stimulate research in all directions. As Priestley put it, we must not remain inactive through false modesty based on fear of being mistaken.
CLAUDE BERNARD

Afraid Direction Fear Ground Ideas Mistake Modesty Risk
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
A discovery is generally an unforeseen relation not included in theory.
CLAUDE BERNARD

Discover General Theory
The eloquence of a scientist is clarity; scientific truth is always more luminous when its beauty is unadorned than when it is tricked out in the embellishments with which our imagination would seek to clothe it.
CLAUDE BERNARD

Beautiful Imagination Ourselves Science Truth
We achieve more than we know. We know more than we understand. We understand more than we can explain.
CLAUDE BERNARD

Achievement Explanation Team Work Understand
Particular facts are never scientific; only generalization can establish science.
CLAUDE BERNARD

Establishment Fact General Science
The better educated we are and the more acquired information we have, the better prepared shall we find our minds for making great and fruitful discoveries.
CLAUDE BERNARD

Better Discover Education Information Mindset
Obervation is a passive science, experimentation is an active science.
CLAUDE BERNARD

Active Experiment Observation Passive Science
The great experimental principle, then, is doubt, that philosophic doubt which leaves to the mind its freedom and initiative, and from which the virtues most valuable to investigators in physiology and medicine are derived.
CLAUDE BERNARD

Doubt Experiment Freedom Greatness Leave Medicine Mindset Principle Virtue
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
Feeling alone guides the mind.
CLAUDE BERNARD

Alone Feeling Guide Mindset

The experimenter who does not know what he is looking for will not understand what he finds.

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The experimenter who does not know what he is looking for will not understand what he finds.

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