Galileo Galilei

I do not think it is necessary to believe that the same God who gave us our senses, our reason, and our intellect, also intended us to forego their use.

The senses, though they are sometimes deceived, are not always so.

I hold it to be an error to believe that the truths of faith and the truths of science are contradictory.

The book of nature is a book of a single language, the language of mathematics.

There are those who are so afraid of truth that they would rather deny the evidence of their own senses than admit it.

The universe is an immense, eternal, and infinite work, which can be understood only by the one who created it.

To deny one's senses and reason is to deny God's gifts.

The authority of a thousand is not worth the humble reasoning of a single individual who observes the facts.