Galileo Galilei

Nonetheless, it moves.

— Galileo Galilei

And yet it moves.

— Galileo Galilei

“Eppur si muove.”

— Galileo Galilei

See now the power of truth.

— Galileo Galilei

By denying scientific principles, one may maintain any paradox.

— Galileo Galilei

Where the senses fail us, reason must step in.

— Galileo Galilei

I have loved the stars to fondly to ever be fearful of the night.

— Galileo Galilei

The greatest wisdom is to get to know oneself.

— Galileo Galilei

Nature's great book is written in mathematics.

— Galileo Galilei

Who would dare assert that we know all there is to be known?

— Galileo Galilei

Knowing thyself, that is the greatest wisdom.

— Galileo Galilei

Ive loved the stars too fondly to be fearful of the night.

— Galileo Galilei

You cannot teach a man anything; you can only help him discover it in himself

— Galileo Galilei

Nothing occurs contrary to nature except the impossible, and that never occurs.

— Galileo Galilei

You may force me to say what you wish; you may revile me for saying what I do. But it moves.

— Galileo Galilei

There are those who reason well, but they are greatly outnumbered by those who reason badly.

— Galileo Galilei

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

— Galileo Galilei

It is a beautiful and delightful sight to behold the body of the Moon.

— Galileo Galilei

To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.

— Galileo Galilei

Nature...does not act by means of many things when it can do so by means of a few.

— Galileo Galilei

Vision, I say, is related to light itself. But of this sensation and the things pertaining to it, I pretend to understand…

— Galileo Galilei

They know that it is human nature to take up causes whereby a man may oppress his neighbor, no matter how unjustly...…

— Galileo Galilei

Spots are on the surface of the solar body where they are produced and also dissolved, some in shorter and others in…

— Galileo Galilei

Being infinitely amazed, so do I give thanks to God, Who has been pleased to make me the first observer of marvelous…

— Galileo Galilei

The doctrine that the earth is neither the center of the universe nor immovable, but moves even with a daily rotation, is…

— Galileo Galilei

“E pur si muove." (And yet it moves.) ( What Galileo purportedly muttered after torturers forced him to recant his theory that…

— Galileo Galilei

If experiments are performed thousands of times at all seasons and in every place without once producing the effects mentioned by your…

— Galileo Galilei

But some, besides allegiance to their original error, possess I know not what fanciful interest in remaining hostile not so much toward…

— Galileo Galilei

When the moon is ninety degrees away from the sun it sees but half the earth illuminated (the western half). For the…

— Galileo Galilei

“I esteem myself happy to have as great an ally as you in my search for truth. I will read your work…

— Galileo Galilei

Surely, God could have caused birds to fly with their bones made of solid gold, with their veins full of quicksilver, with…

— Galileo Galilei

The surface of the Moon is not smooth, uniform, and precisely spherical as a great number of philosophers believe it to be,…

— Galileo Galilei

If there were as great a scarcity of soil as of jewels or precious metals, there would not be a prince who…

— Galileo Galilei

Oh, my dear Kepler, how I wish that we could have one hearty laugh together. Here, at Padua, is the principal professor…

— Galileo Galilei

The difficulties in the study of the infinite arise because we attempt, with our finite minds, to discuss the infinite, assigning to…

— Galileo Galilei

Alas! Your dear friend and servant Galileo has been for the last month hopelessly blind; so that this heaven, this earth, this…

— Galileo Galilei

Wine is sunlight, held together by water.

— Galileo Galilei

We must say that there are as many squares as there are numbers.

— Galileo Galilei

Mathematics is the key and door to the sciences.

— Galileo Galilei

Measure what is measurable, and make measurable what is not so.

— Galileo Galilei