Science is a system of ...

Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.
Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.
 Rudolf Carnap

More phrases

Who sows virtue reaps honor.
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 Leonardo da Vinci
He who conquers himself is the mightiest warrior.
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 Confucius
The fixed determination to have acquired the warrior soul, to either conquer or perish with honor, is the secret of victory.
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 George S. Patton
We are all warriors. Each of us struggles every day to define and defend our sense of purpose and integrity, to justify our existence on the planet and to understand, if only within our own hearts, who we are and what we believe in.
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 Steven Pressfield
See first with your mind, then with your eyes, and finally with your body.
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 Yagyu Munenori

Quotes from the same author

Metaphysicians are musicians without musical ability.
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 Rudolf Carnap
If one is interested in the relations between fields which, according to customary academic divisions, belong to different departments, then he will not be welcomed as a builder of bridges, as he might have expected, but will rather be regarded by both sides as an outsider and troublesome intruder.
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 Rudolf Carnap