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It is what we know already that often prevents us from learning.

Claude Bernard

But while I accept specialization in the practice, I reject it utterly in the theory of science.
CLAUDE BERNARD

Acceptance Myself Practice Science Theory
Our ideas are only intellectual instruments which we use to break into phenomena; we must change them when they have served their purpose, as we change a blunt lancet that we have used long enough.
CLAUDE BERNARD

Break Change Enough Ideas Instrument Intellectual Purpose
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
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
Experiment is fundamentally only induced observation.
CLAUDE BERNARD

Experiment Fundamental Observation
In teaching man, experimental science results in lessening his pride more and more by proving to him every day that primary causes, like the objective reality of things, will be hidden from him forever and that he can only know relations.
CLAUDE BERNARD

Experiment Forever Man Reality Relation Science Teaching
True science teaches us to doubt and, in ignorance, to refrain.
CLAUDE BERNARD

Doubt Ignorance Science Teaching True
First causes are outside the realm of science.
CLAUDE BERNARD

Reason Science
Particular facts are never scientific; only generalization can establish science.
CLAUDE BERNARD

Establishment Fact General Science
Man can learn nothing unless he proceeds from the known to the unknown.
CLAUDE BERNARD

Learning Man Unknown
If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in my opinion, sharply differentiates biological science. I should say: life is creation.
CLAUDE BERNARD

Character Clear Creation Expression Life Science
Everything is poisonous, nothing is poisonous, it is all a matter of dose.
CLAUDE BERNARD

Amount Poison Portion
Science does not permit exceptions.
CLAUDE BERNARD

Exception One Liner Science
It is what we know already that often prevents us from learning.
CLAUDE BERNARD

Deep Knowledge Learning Ourselves Prevent
Priestley said that each discovery we make shows us many others that should be made.
CLAUDE BERNARD

Discover Science Show
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

It is what we know already that often prevents us from learning.

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It is what we know already that often prevents us from learning.

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