Where the senses fail us, reason must step in.

Quote by Galileo Galilei

Topics: Galileo Galilei Quotes

And who can doubt that it will lead to the worst disorders when minds created...

And who can doubt that it will lead to the worst disorders when minds created...

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

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

Spots are on the surface of the solar body where they are produced and also...

Spots are on the surface of the solar body where they are produced and also...

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

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

I think that in the discussion of natural problems we ought to begin not with...

I think that in the discussion of natural problems we ought to begin not with...

I do not feel obliged to believe that the same God who endowed us with...

I do not feel obliged to believe that the same God who endowed us with...

Doubt is the father of invention.

Doubt is the father of invention.

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

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

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

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

I think that in the discussion of natural problems we ought to begin not with...

I think that in the discussion of natural problems we ought to begin not with...

The sun, with all those planets revolving around it and dependent on it, can still...

The sun, with all those planets revolving around it and dependent on it, can still...

By denying scientific principles, one may maintain any paradox.

By denying scientific principles, one may maintain any paradox.

Nature is relentless and unchangeable, and it is indifferent as to whether its hidden reasons...

Nature is relentless and unchangeable, and it is indifferent as to whether its hidden reasons...

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

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

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

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

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

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

Facts which at first seem improbable will, even on scant explanation, drop the cloak which...

Facts which at first seem improbable will, even on scant explanation, drop the cloak which...

No facts to me are sacred; none are profane.

No facts to me are sacred; none are profane.

Facts are the air of scientists. Without them you can never fly.

Facts are the air of scientists. Without them you can never fly.

Theory helps us to bear our ignorance of facts

Theory helps us to bear our ignorance of facts