Galileo Galilei
Father of observational astronomy and modern physics
Quotes by Galileo Galilei
I consider the man who is more concerned with the truth of his arguments than with the victory of his opponent to be a true philosopher.
The universe is a grand book written in the language of mathematics.
It is a great shame to forbid the use of reason in matters of faith.
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 and by some other means to give us knowledge which we can attain by them.
The senses, assisted by reason, are the only source of knowledge.
The more we learn, the more we discover our ignorance.
It is a good thing to follow the first law of astronomy, which is to doubt everything.
I have never seen a man so ignorant that I could not learn something from him.
The book of nature is written in the language of mathematics, and its characters are triangles, circles, and other geometrical figures.
To make a truth false is not in the power of any created being.
The wise man is he who knows that he knows nothing.
It is a great error to believe that there is no truth outside of what is written in the Bible.
I do not believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
The universe is a book written in the language of mathematics, with characters of triangles, circles, and other geometric figures.
It is a great shame to forbid the use of reason in matters of faith, for faith without reason is blind.
The senses, though they may be deceived, are not always so, and when they are, reason must step in.
The book of nature is written in the language of mathematics, and its characters are triangles, circles, and other geometrical figures, without which it is humanly impossible to understand a single word of it.
The senses, however, are not to be trusted entirely, for they sometimes deceive us.
It is a beautiful and admirable thing to know how to speak well, but it is a much more beautiful and admirable thing to know how to be silent.
The Earth is a noble star.