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Knowing thyself, that is the greatest wisdom.

Galileo Galilei

In time you may discover everything that can be discovered, and still your progress will only be progress away from humanity.
GALILEO GALILEI

Discover Humanity Progress Science
Mathematics is the key and door to the sciences.
GALILEO GALILEI

Door Key Mathematics Science
We must say that there are as many squares as there are numbers.
GALILEO GALILEI

Mathematics Number Science
I believe that the intention of Holy Writ was to persuade men of the truths necessary to salvation; such as neither science nor other means could render credible, but only the voice of the Holy Spirit.
GALILEO GALILEI

Believe Holy Intention Men Necessary Salve Science Spirit Truth
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
I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forego their use.
GALILEO GALILEI

Atheist Believe God Intellectual Obligation Reason Sense
Philosophy is written in that great book which ever lies before our eyes. I mean the universe, but we cannot understand it if we do not first learn the language and grasp the symbols, in which it is written.
GALILEO GALILEI

Book Eyes Language Philosophy Understand Universe Writing
I have never met a man so ignorant that I couldn’t learn something from him.
GALILEO GALILEI

Himself Ignorant Inspirational Learning
Science proceeds more by what it has learned to ignore than what it takes into account.
GALILEO GALILEI

Account Ignorance Learning Proceed Science
The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.
GALILEO GALILEI

Science Stars Togetherness Universe
God is known by nature in his works, and by doctrine in his revealed word.
GALILEO GALILEI

Doctrine God Nature Reveal Work
The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.
GALILEO GALILEI

Bunch Dependent Grapes Planet Revolve Sun Universe
It is a beautiful and delightful sight to behold the body of the Moon.
GALILEO GALILEI

Beautiful Body Delight Moon Sight
By denying scientific principles, one may maintain any paradox.
GALILEO GALILEI

Deny Maintain Principle Science Truth
Nothing occurs contrary to nature except the impossible, and that never occurs.
GALILEO GALILEI

Contrary Except Impossible Nature Occur
You cannot teach a person something he does not already know, you can only bring what he does know to his awareness.
GALILEO GALILEI

Aware Knowledge Teaching
That sculpture is more admirable than painting for the reason that it contains relief and painting does not is completely false.
GALILEO GALILEI

Admire Painting Reason relief Sculpture
The Bible shows the way to go to heaven, not the way the heavens go.
GALILEO GALILEI

God Heaven Path
You cannot teach a man anything, you can only help him find it within himself.
GALILEO GALILEI

Help Himself Man Teaching Wisdom
Holy Scripture could never lie or err…its decrees are of absolute and inviolable truth.
GALILEO GALILEI

Absolute Holy Lie Scripture Truth
Mathematics is the language in which God has written the universe.
GALILEO GALILEI

God Language Mathematics Universe Writing
In the future, there will be opened a gateway and a road to a large and excellent science into which minds more piercing than mine shall penetrate to recesses still deeper.
GALILEO GALILEI

Excellence Future Mind Road Science
It is surely harmful to souls to make it a heresy to believe what is proved.
GALILEO GALILEI

Believe Harm Prove Science Soul
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
Philosophy is written in this grand book, the universe, which stands continually open to our gaze.
GALILEO GALILEI

Book Gaze Open Philosophy Stand Writing
Where the senses fail us, reason must step in.
GALILEO GALILEI

Failure One Liner Reason Science Sense Step
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

Knowing thyself, that is the greatest wisdom.

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Knowing thyself, that is the greatest wisdom.

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