Galileo Galilei — "It is not in the power of any created being to make things true or false, but on…"

"I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see for myself at any time by means of experiment. Witnesses are examined in doubtful…"

"And finally, if the earth were to stop spinning, then the water in the oceans would fly off, and the mountains would crumble. So it must be moving."

"Eppur si muove! (And yet it moves!)"

"I cannot without great astonishment — I might say without great insult to my intelligence — hear it attributed as a prime perfection and nobility of the natural and integral bodies of the universe tha…"

"I consider the best judge to be the one who knows how to listen to both sides."