Galileo Galilei Quotes

Enjoy the top 139 famous quotes, sayings and quotations by Galileo Galilei.

Galileo Galilei Quotes

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

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

— Galileo Galilei

You cannot teach a man anything, you can only help him find it within himself.

— Galileo Galilei

In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man.

— Galileo Galilei

Names and attributes must be accommodated to the essence of things, and not the essence to the names, since things come first and names afterwards.

— Galileo Galilei

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

— Galileo Galilei

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

— Galileo Galilei

The vain presumption of understanding everything can have no other basis than never having understood anything. For anyone who had ever experienced just once the perfect understanding of one single thing, and had truly tasted how knowledge is accomplished, would recognize that of the infinity of other truths he understands nothing.

— Galileo Galilei

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

— Galileo Galilei

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

I believe that the intention of Holy Writ was to persuade men of the truths necessary to salvation; such as neither science nor other means could render credible, but only the voice of the Holy Spirit.

— Galileo Galilei

The deeper I go in considering the vanities of popular reasoning, the lighter and more foolish I find them. What greater stupidity can be imagined than that of calling jewels, silver, and gold "precious," and earth and soil "base"?

— Galileo Galilei

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

— 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 we measure a field.

— Galileo Galilei

I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration ... [I]t is not in the power of professors of the demonstrative sciences to alter their opinions at will, so as to be now of one way of thinking and now of another ... [D]emonstrated conclusions about things in nature of the heavens, do not admit of being altered with the same ease as opinions to what is permissible or not, under a contract, mortgage, or bill of exchange.

— Galileo Galilei

But what exceeds all wonders, I have discovered four new planets and observed their proper and particular motions, different among themselves and from the motions of all the other stars; and these new planets move about another very large star [Jupiter] like Venus and Mercury, and perchance the other known planets, move about the Sun. As soon as this tract, which I shall send to all the philosophers and mathematicians as an announcement, is finished, I shall send a copy to the Most Serene Grand Duke, together with an excellent spyglass, so that he can verify all these truths.

— Galileo Galilei

I am certainly interested in a tribunal in which, for having used my reason, I was deemed little less than a heretic. Who knows but men will reduce me from the profession of a philosopher to that of historian of the Inquisition!

— Galileo Galilei

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