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Long experience has taught me this about the status of mankind with regard to matters requiring thought.

Galileo Galilei

The deeper I go in considering the vanities of popular reasoning, the lighter and more foolish I find them.
GALILEO GALILEI

Consideration Fools Reason Vanity
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
Where the senses fail us, reason must step in.
GALILEO GALILEI

Failure One Liner Reason Science Sense Step
Nature is written in mathematical language.
GALILEO GALILEI

Language Mathemetics Nature One Liner
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
All truths are easy to understand once they are discovered; the point is to discover them.
GALILEO GALILEI

Discover Easy Point Truth Understand
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
Philosophy is written in this grand book, the universe, which stands continually open to our gaze.
GALILEO GALILEI

Book Gaze Open Philosophy Stand Writing
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
It is a beautiful and delightful sight to behold the body of the Moon.
GALILEO GALILEI

Beautiful Body Delight Moon Sight
The vain presumption of understanding everything can have no other basis than never having understood anything.
GALILEO GALILEI

Science Understand Vain
Philosophy is written in this grand book, the universe, which stands continually open to our gaze.
GALILEO GALILEI

Book Gaze Open Philosophy Stand Writing
Measure what can be measured, and make measurable what cannot be measured.
GALILEO GALILEI

Measure Science
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
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
Mathematics is the key and door to the sciences.
GALILEO GALILEI

Door Key Mathematics Science
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
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
Nonetheless, it moves.
GALILEO GALILEI

One Liner Science
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
Who would dare assert that we know all there is to be known?
GALILEO GALILEI

Dare Science
Being infinitely amazed, so do I give thanks to God, Who has been pleased to make me the first observer of marvelous things, unrevealed to bygone ages.
GALILEO GALILEI

Amaze God Infinite Thankful
See now the power of truth.
GALILEO GALILEI

Justice One Liner Power Science Truth
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 Divine intellect indeed knows infinitely more propositions.
GALILEO GALILEI

Divine Indeed Infinite Intellectual
The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.
GALILEO GALILEI

Science Stars Togetherness Universe
The laws of nature are written by the hand of God in the language of mathematics.
GALILEO GALILEI

God Language Law Mathematics Nature Writing

Long experience has taught me this about the status of mankind with regard to matters requiring thought.

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Long experience has taught me this about the status of mankind with regard to matters requiring thought.

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