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You cannot teach a person something he does not already know, you can only bring what he does know to his awareness.

Galileo Galilei

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
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
If I were again beginning my studies, I would follow the advice of Plato and start with mathematics.
GALILEO GALILEI

Advice Beginning Follow Mathematics Study
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
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
We cannot teach people anything; we can only help them discover it within themselves.
GALILEO GALILEI

Discover Help People Teaching
The laws of nature are written by the hand of God in the language of mathematics.
GALILEO GALILEI

God Language Law Mathematics Nature Writing
Science proceeds more by what it has learned to ignore than what it takes into account.
GALILEO GALILEI

Account Ignorance Learning Proceed Science
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
Who would dare assert that we know all there is to be known?
GALILEO GALILEI

Dare Science
Measure what can be measured, and make measurable what cannot be measured.
GALILEO GALILEI

Measure 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
The vain presumption of understanding everything can have no other basis than never having understood anything.
GALILEO GALILEI

Science Understand Vain
Nonetheless, it moves.
GALILEO GALILEI

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

Book Gaze Open Philosophy Stand Writing
We see only the simple motion of descent, since that other circular one common to the Earth, the tower, and ourselves remains imperceptible.
GALILEO GALILEI

Descent Earth Motion Science

You cannot teach a person something he does not already know, you can only bring what he does know to his awareness.

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You cannot teach a person something he does not already know, you can only bring what he does know to his awareness.

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Popular Authors

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