Galileo Galilei

It vexes me when they would constrain science by the authority of the Scriptures, and yet do not consider themselves bound to…

— Galileo Galilei

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

— Galileo Galilei

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

— Galileo Galilei

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.

— Galileo Galilei

The number of people that can reason well is much smaller than those that can reason badly. If reasoning were like hauling…

— Galileo Galilei

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

— Galileo Galilei

“My dear Kepler, I wish that we might laugh at the stupidity of the human herd. What do you have to say…

— Galileo Galilei

It is very pious to say and prudent to affirm that the holy Bible can never speak untruth -- whenever its true…

— Galileo Galilei

I would beg the wise and learned fathers [of the church] to consider with all diligence the difference which exists between matters…

— Galileo Galilei

Mathematics is the key and door to the sciences.

— 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

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

— Galileo Galilei

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

— Galileo Galilei

He who looks the higher is the more highly distinguished, and turning over the great book of nature (which is the proper…

— Galileo Galilei

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

— Galileo Galilei

The deeper I go in considering the vanities of popular reasoning, the lighter and more foolish I find them. What greater stupidity…

— Galileo Galilei

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

— Galileo Galilei

What has philosophy got to do with measuring anything? It's the mathematicians you have to trust, and they measure the skies like…

— Galileo Galilei

For my part I consider the earth very noble and admirable precisely because of the diverse alterations, changes, generations, etc. that occur…

— Galileo Galilei

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

— Galileo Galilei

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

— Galileo Galilei

They who depend upon manifest observations will philosophize better than those who persist in opinions repugnant to the senses.

— Galileo Galilei

I have been judged vehemently suspect of heresy, that is, of having held and believed that the sun in the centre of…

— Galileo Galilei

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

— Galileo Galilei

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

— Galileo Galilei