Quotes by Galileo Galilei


You cannot teach a man anything; you can only help him discover it in himself.

Doubt is the father of invention.

Where the senses fail us, reason must step in.

By denying scientific principals, one may maintain any paradox.

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

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

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

Facts which at first seem improbable will, even on scant explanation, drop the cloak which has hidden them and stand forth in naked and simple beauty.

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.

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.


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