Galileo Galilei Quotes

Nothing can be taught to a man, only it's possible to help him to discover it inside.

Holy Writ was intended to teach men how to go to Heaven not how the heavens go.

I do not know what to say in a case so surprising, so unlooked for and so novel.

Nature's great book is written in mathematics.

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

Nature is written in mathematical language.

Scripture is a book about going to Heaven. It's not a book about how the heavens go.

Holy Scripture could never lie or err...its decrees are of absolute and inviolable truth.

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

By denying scientific principles, one may maintain any paradox.

The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.

The book of nature is written in the language of mathematics.

Mathematics is the key and door to the sciences.

It is surely harmful to souls to make it a heresy to believe what is proved.

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

Wine is sunlight, held together by water.

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

See now the power of truth.

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

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

The laws of nature are written by the hand of God in the language of mathematics.

All truths are easy to understand once they are discovered; the point is to discover them.

You can't teach anybody anything, only make them realize the answers are already inside them.

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

Knowing thyself, that is the greatest wisdom.

Two truths cannot contradict one another.

Nonetheless, it moves.

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

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

The greatest wisdom is to get to know oneself.

The Bible shows the way to go to heaven, not the way the heavens go.

Mathematics is the language with which God has written the universe.

Where the senses fail us, reason must step in.

Science proceeds more by what it has learned to ignore than what it takes into account.

God is known by nature in his works, and by doctrine in his revealed word.