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

Galileo Galilei

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
I have never met a man so ignorant that I couldn’t learn something from him.
GALILEO GALILEI

Himself Ignorant Inspirational Learning
Holy Scripture could never lie or err…its decrees are of absolute and inviolable truth.
GALILEO GALILEI

Absolute Holy Lie Scripture Truth
The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.
GALILEO GALILEI

Science Stars Togetherness Universe
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
Mathematics is the language in which God has written the universe.
GALILEO GALILEI

God Language Mathematics Universe Writing
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
The laws of nature are written by the hand of God in the language of mathematics.
GALILEO GALILEI

God Language Law Mathematics Nature Writing
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’ve loved the stars too fondly to be fearful of the night.
GALILEO GALILEI

Fear Love Night Stars
The earth, in fair and grateful exchange, pays back to the moon an illumination similar to that which it receives from her throughout nearly all the darkest gloom of the night.
GALILEO GALILEI

Darkness Earth exchange Gloom Illuminate Moon Night Receive
To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement ‘I do not know’.
GALILEO GALILEI

Modest Statement Wise
All truths are easy to understand once they are discovered; the point is to discover them.
GALILEO GALILEI

Discover Easy Point Truth Understand
In my studies of astronomy and philosophy I hold this opinion about the universe, that the Sun remains fixed in the centre of the circle of heavenly bodies, without changing its place; and the Earth, turning upon itself, moves round the Sun.
GALILEO GALILEI

Astronomy Earth Opinion Philosophy Round Science Study Sun Universe
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 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

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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