A Quote by Bas van Fraassen

To develop an empiricist account of science is to depict it as involving a search for truth only about the empirical world, aboutwhat is actual and observable.... It must involve throughout a resolute rejection of the demand for an explanation of the regularities in the observable course of nature, by means of truths concerning a reality beyond what is actual and observable, as a demand which plays no role in the scientific enterprise.
Our situations... are very different. The nature of our politics is different. I don't deny, though, that political cycles, which are observable in the United States, are sometimes observable here.
Under my definition, a scientific theory is a proposed explanation which focuses or points to physical, observable data and logical inferences. There are many things throughout the history of science which we now think to be incorrect which nonetheless would fit that which would fit that definition. Yes, astrology is in fact one.
We have failed to protect science against speculative extensions of nature, continuing to assign physical and mathematical properties to hypothetical entities beyond what is observable in nature.
Science has to be understood in its broadest sense, as a method for comprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.
Science has to be understood in its broadest sense, as a method for apprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.
This mindless tolerance, which places observable scientific facts, subject to proof, on the same level as unprovable supernatural fantasy, has played a major role in the resurgence of both anti-intellectualism and anti-rationalism.
With the observable fact that scientific knowledge makes our lives better when applied with concern for human welfare and environmental protection, there is no question that science and technology can produce abundance so that no one has to go without.
Since science's competence extends to observable and measurable phenomena, not to the inner being of things, and to the means, not to the ends of human life, it would be nonsense to expect that the progress of science will provide men with a new type of metaphysics, ethics, or religion.
As words are not the things we speak about, and structure is the only link between them, structure becomes the only content of knowledge. If we gamble on verbal structures that have no observable empirical structures, such gambling can never give us any structural information about the world. Therefore such verbal structures are structurally obsolete, and if we believe in them, they induce delusions or other semantic disturbances.
If complex organisms demand an explanation, so does a complex designer. And it's no solution to raise the theologian's plea that God (or the Intelligent Designer) is simply immune to the normal demands of scientific explanation. To do so would be to shoot yourself in the foot. You cannot have it both ways. Either ID belongs in the science classroom, in which case it must submit to the discipline required of a scientific hypothesis. Or it does not, in which case, get it out of the science classroom and send it back to church, where it belongs.
... on principle, it is quite wrong to try founding a theory on observable magnitudes alone. In reality the very opposite happens. It is the theory which decides what we can observe.
Plain horse sense ought to tell us that anything that makes no change in the man who professes it makes no difference to God either, and it is an easily observable fact that for countless numbers of persons the change from no-faith to faith makes no actual difference in the life.
True observers of nature, although they may think differently, will still agree that everything that is, everything that is observable as a phenomenon, can only exhibit itself in one of two ways. It is either a primal polarity that is able to unify, or it is a primal unity that is able to divide. The operation of nature consists of splitting the united or uniting the divided; this is the eternal movement of systole and diastole of the heartbeat, the inhalation and exhalation of the world in which we live, act, and exist.
Docility is the observable half of reason.
Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems .
Science...has become identified with a philosophy known as materialism or scientific naturalism. This philosophy insists that nature is all there is, or at least the only thing about which we can have any knowledge. It follows that nature had to do its own creating, and that the means of creation must have included any role for God.
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