Galileo Galilei Quotes

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

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

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

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

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

By denying scientific principles, one may maintain any paradox.

We cannot teach people anything we can only help them discover it within themselves.

Nature is relentless and unchangeable, and it is indifferent as to whether its hidden reasons and actions are understandable to man or not.

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.

Where the senses fail us, reason must step in.

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

I think that in the discussion of natural problems we ought to begin not with the Scriptures, but with experiments and demonstrations.

Minds with fixed ideas are like granite: They can never be penetrated with soft words and gentle persuasions.

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

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.

He who looks the higher is the more highly distinguished, and turning over the great book of nature (which is the proper object of philosophy) is the way to elevate one's gaze.

A stone thrown up into the air is bound to fall down, and absolute power is like a huge stone thrown up into the air.

And, believe me, if I were again beginning my studies, I should follow the advice of Plato and start with mathematics.

(T)he increase of known truths stimulates the investigation, establishment, and growth of the arts.

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.

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

The sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do.

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

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.