Reason Comes After a Plan
When Galileo caused balls, the weights of which he had himself previously determined, to roll down an inclined plane; when Torricelli made the air carry a weight which he had calculated beforehand to be equal to that of a definite volume of water; or in more recent times, when Stahl changed metal into lime, and lime back into metal, by withdrawing something and then restoring it, a light broke upon all students of nature. They learned that reason has insight only into that which it produces after a plan of its own, and that it must not allow itself to be kept, as it were, in nature's leading-strings, but must itself show the way with principles of judgement based upon fixed laws, constraining nature to give answer to questions of reason's own determining. Accidental observations, made in obedience to no previously thought-out plan, can never be made to yield a necessary law, which alone reason is concerned to discover.
Notes:
There must be experiments to guide reason, without which reason will make up it's own explanations.
Folksonomies: experimentation
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Concepts:
Determinacy (0.910586): dbpedia | freebase
Equals sign (0.910050): dbpedia | freebase | yago
The Critique of Pure Reason ; The Critique of Practical Reason and Other Ethical Treatises ; The Critique of Judgement