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Measure what can be measured, and make measurable what cannot be measured.

Galileo Galilei

See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.
GALILEO GALILEI

Assure Care Contrary Experiement Glance Power Show Truth
The nature of the human mind is such that unless it is stimulated by images of things acting upon it from without, all remembrance of them passes easily away.
GALILEO GALILEI

Acting Human Mind Nature Remember
I give infinite thanks to God, who has been pleased to make me the first observer of marvelous things.
GALILEO GALILEI

God Infinite Marvelous Please Thanful
Philosophy itself cannot but benefit from our disputes, for if our conceptions prove true, new achievements will be made; if false, their refutation will further confirm the original doctrines.
GALILEO GALILEI

Achievement Benefit Conception Dispute Philosophy Prove
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
GALILEO GALILEI

Authority Humble Individual Reason Science Worth
If you could see the earth illuminated when you were in a place as dark as night, it would look to you more splendid than the moon.
GALILEO GALILEI

Darkness Earth Illuminate Moon Night Place
What greater stupidity can be imagined than that of calling jewels, silver, and gold “precious,” and earth and soil “base”?
GALILEO GALILEI

Earth Imagination Science Stupidity
In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man.
GALILEO GALILEI

Authority Individual Man Opinion Reason Science Spark Worth
I entertain no doubts as to the truth of the transfinites, which I have recognized with God’s help.
GALILEO GALILEI

Doubt Entertainment God Help Recognize Truth
Names and attributes must be accommodated to the essence of things, and not the essence to the names, since things come first and names afterwards.
GALILEO GALILEI

Accomodation Attribute Essence Name Science
You may force me to say what you wish; you may revile me for saying what I do. But it moves.
GALILEO GALILEI

Force Move Science
Facts which at first seem improbable will, even on scant explanation, drop the cloak which has hidden them and stand forth in naked and simple beauty.
GALILEO GALILEI

Explanation Fact Hide Naked Science
The laws of nature are written by the hand of God in the language of mathematics.
GALILEO GALILEI

God Language Law Mathematics Nature Writing
Holy Writ was intended to teach men how to go to Heaven not how the heavens go.
GALILEO GALILEI

Heaven Holy Intend Teaching
Long experience has taught me this about the status of mankind with regard to matters requiring thought.
GALILEO GALILEI

Experience Mankind Matter Regard Requirement Status Teaching
Nature does not act by means of many things when it can do so by means of a few.
GALILEO GALILEI

Act Nature

Measure what can be measured, and make measurable what cannot be measured.

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Measure what can be measured, and make measurable what cannot be measured.

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