Galileo Galilei — "The deeper I go into the sciences, the more I am convinced that the world is the…"

"The great book of nature is written in mathematical symbols."

"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."

"To deny the principles of philosophy is to reject reason itself."

"I have written up many reasons and refutations on the subject, but I have not dared until now to bring them into the open, being warned by the fortunes of Copernicus himself, our master, who procured …"

"My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall…"