I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use.
Letter to the Grand Duchess Christina (1615)
GG
Galileo Galilei quotes
1564-1642 ยท Scientists and inventors
Italian astronomer and physicist often called the father of modern science.
4 quotes, 3 traced to where Galilei said or wrote them.
In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.
Third letter on sunspots (1612), as translated in Arago (1859)
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.
Quoted in Stillman Drake, Discoveries and Opinions of Galileo (1957)
I have never met a man so ignorant that I could not learn something from him.
Quoted in Will Durant, The Age of Reason Begins (1961); no primary source