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"There are three principal means of acquiring knowledge... observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination."
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Exlpore more Nature quotes
"Clear skies do not promise rain."
"What is a weed? A plant whose virtues have not yet been discovered."
"A puddle repeats infinity, and is full of light; nevertheless, if analyzed objectively, a puddle is a piece of dirty water spread very thin on mud."
Explore more quotes by Denis Diderot
"People praise virtue, but they hate it, they run away from it. It freezes you to death, and in this world you've got to keep your feet warm."
"The pit of a theatre is the one place where the tears of virtuous and wicked men alike are mingled."
"One declaims endlessly against the passions; one imputes all of man's suffering to them. One forgets that they are also the source of all his pleasures."
"Watch out for the fellow who talks about putting things in order! Putting things in order always means getting other people under your control."
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