We must keep our freedom of ...

We must keep our freedom of mind, ... and must believe that in nature what is absurd, according to our theories, is not always impossible.
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

More phrases

It really is all about believing in yourself: 80 per cent mental, 20 per cent physical.
 Victoria Pendleton
I believe however that peace is attainable regardless of the Arabs mentality, society or government.
 Yitzhak Rabin
You have inside you the capacity to invest your mental, emotional, and spiritual gifts in a way that glorifies God, impacts the world, and satisfies your own soul. I believe that-and I want you to believe it, too.
 David Jeremiah
The 'Goonies' are a close knit group. They believe in themselves, even though there are doubters throwing darts at them outside...'Goonies never say die.' That's pretty in line with the mentality of our team.
 Robin Lopez
I believe that there's no improvement if you have an inferiority complex and victim mentality.
 Kim Nam-joon

Quotes from the same author

Man does not limit himself to seeing; he thinks and insists on learning the meaning of phenomena whose existence has been revealed to him by observation. So he reasons, compares facts, puts questions to them, and by the answers which he extracts, tests one by another. This sort of control, by means of reasoning and facts, is what constitutes experiment, properly speaking; and it is the only process that we have for teaching ourselves about the nature of things outside us.
 Claude Bernard
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
Even mistaken hypotheses and theories are of use in leading to discoveries. This remark is true in all the sciences. The alchemists founded chemistry by pursuing chimerical problems and theories which are false. In physical science, which is more advanced than biology, we might still cite men of science who make great discoveries by relying on false theories.
 Claude Bernard
To be worthy of the name, an experimenter must be at once theorist and practitioner. While he must completely master the art of establishing experimental facts, which are the materials of science, he must also clearly understand the scientific principles which guide his reasoning through the varied experimental study of natural phenomena. We cannot separate these two things: head and hand. An able hand, without a head to direct it, is a blind tool; the head is powerless without its executive hand.
 Claude Bernard
It is impossible to devise an experiment without a preconceived idea; devising an experiment, we said, is putting a question; we never conceive a question without an idea which invites an answer. I consider it, therefore, an absolute principle that experiments must always be devised in view of a preconceived idea, no matter if the idea be not very clear nor very well defined.
 Claude Bernard